Product Review: Neptune Systems SKY LED Luminaire

BoneDoc

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Thanks - that took months to complete.
And for that the community, myself included appreciate you. From my understanding of the spectrum, it looks like it has a wide band blue spectrum, good for coral growth, but really pesky around 450-460 for that pop today’s reefers seem to prefer. Am I right?

Also as a scientist you may cringe at this, but viscerally how does the coloration and growth look to you compared to some of the other fixtures you have had or tested?
 

BoneDoc

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I love what I am seeing so far with the performance of the Sky, Neptune went above and beyond in picking the right mix of LEDs. I just wish more companies would pay attention to the build quality when designing their products... Chinese black box style cooling, and loose diffusors are less of an issue on a $400 product, but at close to $900 these should be bullet proof. Judging by weight, I bet if I open one up, there will be no conformal coating, and little to no heat sink fins on that LED board. (hoping to get ahold of one soon to see inside for myself)
Can someone take these specs, and stick them in a Mitras, or better yet a coral care gen2 package please. I would buy a whole mess of them right now.
Like anything in life, it’s a series of compromises to achieve a certain goal. While a fixture like CC looks great they are heavy. So that’s part of the design trade offs (even if money or build quality was not a concern)
 

Dana Riddle

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And for that the community, myself included appreciate you. From my understanding of the spectrum, it looks like it has a wide band blue spectrum, good for coral growth, but really pesky around 450-460 for that pop today’s reefers seem to prefer. Am I right?

Also as a scientist you may cringe at this, but viscerally how does the coloration and growth look to you compared to some of the other fixtures you have had or tested?
Every light (within reason) I've ever tested had its strengths and weaknesses, and, for many reasons there is no 'best light' - Compromise is the key word here. Now, to answer your question, I'm pleased with the growth and coloration of most corals in the tank. A WD Acro is coloring up, chalices are spreading rapidly, and a couple of Montiporas are going to dominate the tank unless I do some serious trimming, and a Seriatopora is doing well (for various reasons, I've never been able to maintain one of these for any significant amount of time). Another Acropora is going to grow out of the water soon. Bear in mind that TS Zeka caused a power outage around Halloween of 2020, and I didn't get serious about a reboot until a whole house generator was installed in March 2021. So, it's a very young tank and so far so good!
 

HeyLookItsCaps

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Thanks for the review, glad to see some rubber to the road analysis.

I will add a collective “reeeee” for all the people who hate this unit without going in depth with one before it gets flooded.
 

Butcher333

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Neptune made a light. I think they have the resources and ambition to make a good light and are aware of the competition. Dana (the legend Mr. Riddle LOL) did an analysis of it. Im sure they’ve put together a good light, just because “why wouldn’t they have”. The end
 

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DRskyPicture1.jpg

Neptune Systems has offered sophisticated SCADA (Supervisory Control and Data Acquisition) devices along with analyzers, pumps, ATOs, and others for many years. Although many lighting systems made by others could be controlled by the Apex, only recently has this company offered its own LED luminaire. This article will examine the SKY LED light.

Years ago, LEDs (light-emitting diodes) were regulated to lowly positions, such as on/off indicators on coffee makers. Technological advances have offered diodes capable of producing a rainbow of colors, improved optics and heat management, etc. and are now the choice lighting systems for many aquarium hobbyists.

Specifications These following specifications are current as of the time of this writing. As with any product, the manufacturer reserves the right to modify the product.

Dimensions: Total: 13.75” x 10.25” x 1.5”. The LED array is slightly smaller at 12.875” x 9.25”.

Cord Length: Electrical outlet to rectifier 9power supply): ~3 feet. Rectifier to luminaire: ~15 feet.

Power Consumption (full power): 219 watts.

Cooling: Active cooling by up to 2 fans. I can’t hear them operating in the normal ambient sounds of a lab containing multiple tanks, but they are advertised to generate 33 dB at a distance of one meter when at 100% power.

Definitions of Spectral Bandwidths: Since there is a gradual transition between colors in the spectrum, it is not surprising that definitions of bandwidths vary among reference sources. These are as used for this report: UV-A: 350-399nm; Violet: 400-430nm; Blue: 431-480nm; Green-Blue: 481-490nm; Blue-Green: 491-510nm; Green: 511-530nm; Yellow-Green: 531-570nm; Yellow: 571-580nm; Orange: 581-600nm; Red: 601-700nm. Technically, the red portion of the spectrum should be reported as that radiation of up to about 750nm, but most quantum meters report to only 700nm. Apogee Instruments has released a ‘ePAR’ quantum meter that extends further into the absorption range of P700 found in Photosystem I. But that is a discussion for another time.

Spectral Presets There are 16 spectral quality preset choices with the SKY luminaire. However, it should be noted that there is also a ‘Custom’ option where banks of LEDs, on four channels, can be programmed for both intensity and spectral quality. Thus, the user to has practically unlimited choices. With that said, examinations of the presets are below. Bear in mind these presets are for spectral quality, and light intensity is chosen by the aquarist.

Note: There will a little red radiation in the presets that produce only blue, due to this light exciting the phosphors found those diodes producing ‘white’ light. A spectrometer can see this, but, visually, it is not or only weakly apparent.

AB+ This setting is based on spectrum produced by ATI Blue plus AquaBlue Special T5 lamps in a 4 to 1 ratio, respectively. The preset settings for this mode are 75% for Channel 1 (called Amber); 100% for Channel 2 (called Violet); 100% for Channel 3 (called Royal Blue) and 60% for Channel 4 (called White). See Figures 1 to 3.

2.png

Figure 1.


3.png

Figure 2.


4.png

Figure 3.

PHX14+ This spectral preset is based on light quality produced by a Phoenix 14,000K metal halide lamp. The preset settings for this mode are 30% for Channel 1 (called Amber); 100% for Channel 2 (called Violet); 60% for Channel 3 (called Royal Blue) and 25% for Channel 4 (called White). See Figures 4 to 6.

5.png

Figure 5.


6.png

Figure 6.


5.png

Figure 4.

5,000 Kelvin This spectrum is that of sunlight at 11 am (depending upon a number of variables, of course). The preset settings for this mode are 100% for Channel 1 (called Amber); 8% for Channel 2 (called Violet); 8% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 7 to 9.


8.png

Figure 7.


9.png

Figure 8.


10.png

Figure 9.

7,000 Kelvin This Kelvin is slightly bluer than sunlight at noon on an overcast day. The preset settings for this mode are 100% for Channel 1 (called Amber); 12% for Channel 2 (called Violet); 15% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 10 to 12.

11.png

Figure 10.


12.png

Figure 11.


13.png

Figure 12.


10,000 Kelvin
This spectral setting mimics the bluest of sunlight. The preset settings for this mode are 100% for Channel 1 (called Amber); 25% for Channel 2 (called Violet); 40% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 13 to 15.


14.png

Figure 13.


15.png

Figure 14.


16.png

Figure 15.

12,000 Kelvin This setting mimics the spectral quality of a heavily shaded terrestrial area. The preset settings for this mode are 100% for Channel 1 (called Amber); 35% for Channel 2 (called Violet); 45% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 16 to 18.

17.png

Figure 16.

18.png

Figure 17.

19.png

Figure 18.

14,000 Kelvin This setting more or less mimics the spectrum of a shallow aquatic environment in ‘clear’, colorless water. The preset settings for this mode are 100% for Channel 1 (called Amber); 50% for Channel 2 (called Violet); 50% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 19 to 21.

20.png

Figure 19.

21.png

Figure 20.

22.png

Figure 21.
18,000 Kelvin As any snorkeler or SCUBA diver has noted, aquatic environments at depth can be blue in color, due to absorption of warmer wavelengths by water. Coral growths at 40 feet can be luxurious in this blue environment. The preset settings for this mode are 100% for Channel 1 (called Amber); 95% for Channel 2 (called Violet); 95% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 22 to 24.

23.png

Figure 22.

24.png

Figure 23.

25.png

Figure 24.

20,000K The same comments mentioned for the 18,000K setting apply to this preset as well. The preset settings for this mode are 85% for Channel 1 (called Amber); 100% for Channel 2 (called Violet); 100% for Channel 3 (called Royal Blue) and 85% for Channel 4 (called White). See Figures 25 to 27.

26.png

Figure 25.

27.png

Figure 26.

28.png

Figure 27.

All Blue In this preset, only those LEDs generating UV-A, violet and blue radiation are on. The preset settings for this mode are 0% for Channel 1 (called Amber); 100% for Channel 2 (called Violet); 100% for Channel 3 (called Royal Blue) and 0% for Channel 4 (called White). See Figures 28 to 30.

29.png

Figure 28.

30.png

Figure 29.

31.png

Figure 30.

Deep Blue This preset is different from the ‘All Blue’ setting in that it is mostly blue light that is generated. The preset settings for this mode are 0% for Channel 1 (called Amber); 0% for Channel 2 (called Violet); 100% for Channel 3 (called Royal Blue) and 0% for Channel 4 (called White). See Figures 31 to 33.

32.png

Figure 31.

33.png

Figure 32.

34.png

Figure 33.

Photo Mode The ‘Photo’ mode was not available in the programming of the SKY beta unit I received. It is for those desiring a ‘natural’ light for reef aquarium photography without the use of color-correction filters. The SKY units are now under long-term evaluation making analyses of this function impractical. The preset settings for this mode are 40% for Channel 1 (called Amber); 40% for Channel 2 (called Violet); 40% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White).

Neptune SKY Mode The Neptune SKY mode resembles the spectrum of the 20K mode, but is slightly less blue. The preset settings for this mode are 75% for Channel 1 (called Amber); 100% for Channel 2 (called Violet); 100% for Channel 3 (called Royal Blue) and 60% for Channel 4 (called White). See Figures 34 to 36.

35.png

Figure 34.

36.png

Figure 35.

37.png

Figure 36.

Coral Growth Mode This mode is the most powerful (intensity wise) of all the presets. The preset settings for this mode are 100% for Channel 1 (called Amber); 100% for Channel 2 (called Violet); 100% for Channel 3 (called Royal Blue) and 100% for Channel 4 (called White). See Figures 37 to 39.

38.png

Figure 37.

39.png

Figure 38.

40.png

Figure 39.
Sunset Mode With this setting, light intensity fades to zero output. The preset settings for this mode are 0% for Channel 1 (called Amber); 0% for Channel 2 (called Violet); 0% for Channel 3 (called Royal Blue) and 0% for Channel 4 (called White).

Dim Setting The preset settings for this mode are 15% for Channel 1 (called Amber); 15% for Channel 2 (called Violet); 15% for Channel 3 (called Royal Blue) and 15% for Channel 4 (called White).

Moonlight There are two options for the spectral composition of moonlight produced by the SKY units – blue and white. Only the blue light is shown below. Light intensity, for obvious reasons, is much less than with ‘daylight’ settings (only a few μmol·m²·sec). See Figures 40 to 42.

41.png

Figure 41.
42.png

Figure 42.

43.png

Figure 43.

Custom Mode The ‘custom’ mode allows the user to select intensity and spectral quality of the four channels. Obviously, this presents a practically unlimited selection.

Light Intensity (400-700nm) Photosynthetically Available Radiation (PAR) Photosynthetically Available Radiation (PAR, and reported as Photosynthetic Photon Flux Density or PPFD in units of micromole per square meter per second) is, as we know (or should know), the bandwidth of light that promotes photosynthesis, and is reported by quantum (or PAR) meters. Most quantum meters measure light in the bandwidth of 400 to 700 nm due to the cutoff points of materials used in the sensors. Recently, meters have been introduced that reports PPFD in the bandwidth 0f ~380 to 720 nm. Figure 44 shows PAR values reported by an Apogee Instruments MQ-510 quantum meter positioned in the air at a standardized distance (9.5”) from the luminaire (measurements were corrected so as to report those seen underwater). Note that the number of light-emitting diodes of a particular color that are actually producing radiation in each setting plays a huge part in the amount of reported PAR.

44.png

Figure 44.
Photosynthetically Usable Radiation (PUR) Photosynthetically Usable Radiation (PUR) is the portion of Photosynthetically Available Radiation (PAR) that is absorbed and utilized by photopigments in the process of photosynthesis. Specifically, absorbability is based on that of phytoplankton at 440nm. There is a complex formula to arrive at PUR. Figure 45 reports that obtained through use of a Seneye meter. It should not be a surprise that, in general, the bluer the radiation field, the higher the PUR value. See Figure 45.

Figure 46 demonstrates the relationship of PAR and PUR.

45.png

Figure 45.

46.png

Figure 46.

Light Distribution As we know, photosynthetic organisms require light. Although the intensity of this light varies among sun and shade Symbiodinium clades/species, results of research and experience has shown us that Photosynthetic Photon Flux Densities (PPFD) of ~150 to ~400 μmol·m²·sec is a reasonable compromise for the maintenance of almost all corals, clams, marine plants and algae, etc. If coral coloration is desired, especially with those corals that have the ability to generate non-fluorescent chromoproteins, light intensity exceeding the photosaturation point is desirable (> ~350 μmol·m²·sec). In addition, many Tridacna calm species show no signs of photoinhibition at high light intensities (1,500 μmol·m²·sec).

Note that these measurements were made in a gray Rubber Maid tub. One SKY luminaire was suspended 9.5” above the water surface, and it at 100% power (such as seen in the Coral Growth Mode, or the Custom Mode with all four channels operating at 100%). See the Discussion section for comments. Realize these measurements are accurate for those conditions of my testing. Your measurements will almost certainly be higher due to internal reflections from the aquarium walls. In addition, positioning of the luminaire (height and others) could have a major impact on light intensities. This applies to any lighting source and is not germane only to the SKY LED luminaire.

I’ve chosen to present graphs of light intensity in two formats. The first (as in Figure 47) is a 3D representation of intensities measured on a flat plane (the ‘mountain’ shaped objects represent light intensity, not depth). The second (as in Figure 48) is a 2D representation of the same measurements, but without as many increments – perhaps the two together give a reasonable estimate of light intensities.

Estimated Light Distribution Just Below Water’s Surface These measurements were taken just below the water surface. No water surface agitation was present and hence no waves were generated that could cause a lensing effect. See Figures 47 and 48.

47.png

Figure 47.

48.png

Figure 48.

Light Distribution at 10 Inches Depth Light intensities at a depth of 10 inches. Again, the water surface was not agitated. See Figures 49 and 50.

49.png

Figure 49.

50.png

Figure 50.

Light Distribution at 18 Inches’ Depth And finally, PPFD (PAR) at a depth of 18 inches. See Figures 51 and 52.

51.png

Figure 51.

52.png

Figure 52.

Color Mixing Early LED models had poor color mixing and suffered from something called the ‘disco ball’ effect. The shimmer or glitter (terms for the technically correct ‘caustic network’) produced by this poor coloring mixing was of distinct bands of differently colored light (depending of course upon the number of differently colored LEDs). The color mixing or blending of light by the SKY does not produce the ‘disco ball’ effect, either to my eye or to a spectrometer. The SKY uses a patented process to blend radiation produced by the various LEDs. See Figure 53.

53.png

Figure 53. The spectral qualities of light produced by the SKY are blended well, and no ‘disco’ effect is apparent to my eye, and not apparent to a spectrometer as well.

Discussion Light systems containing light-emitting diodes are the choice of many hobbyists and for many good reasons. Spectral tuning, dimming of light intensity, lamp longevity, power consumption, heat generation, etc. are all selling points. These comments are not new and have been heard before. Of more importance is the temptation to avoid the ‘horsepower’ race where more wattage is a primary consideration. Many LED luminaires are capable of producing more than enough light, and the SKY light is more than capable in this respect.

When examining the PPFD (PAR) values in the measurements made at various depths, several things should be taken into account. First these measurements were made in a gray plastic tub in order to avoid various factors that disturb the actual light distribution pattern. But this is not the whole story, and the light fields in an aquarium environment will almost certainly be higher. First, internal reflections of light from the viewing panes (whether glass or plastic) of an aquarium can increase the amount of light. Upwelling light should be considered as well. ‘Upwelling’ is defined as that light reflected upwards from internal surfaces, such as sand or aqua scaping materials. White sand will reflect more light upwards than, say, black lava sand. If the aquarium has a colored background pane (such as blue, black, or one covered with calcareous algae), some or most light will be absorbed and not reflected back into the aquarium. All underwater testing was done in a condition of practically non-existent water wave action (which can focus light due to a lensing effect – the shimmer we see when water motion comes into play). Under conditions of strong water surface agitation, the PPFD measurements could double. Lastly, an aquarium lighted by just one light (such as we see in the testing) will not be as highly illuminated as a tank utilized multiple lighting sources. In a nutshell, the ‘at-depth’ measurements should be considered as minimal when compared to real-life aquarium situations.

Long-term evaluation of two SKY luminaires is presently under way. In the conditions of this aquarium, the two lights are running at a maximum of about 30% of full intensity. Coral growth and coloration are good to excellent. As a footnote, these corals will be used in future experiments examining coloration and rates of photosynthesis.

Spectral qualities generated by the SKY are practically unlimited. With all the options available, the color of the light generated should fit the tastes of the most discerning hobbyists. In experiments I did a few years ago (in junction with Fluence Bioengineering), we found that spectral quality generated by those LEDs commonly used in aquarium lighting was secondary to light intensity for zooxanthellae found in the stony corals Porites. This was apparent in testing results, but everyday observations of coral growths in captive conditions seem to confirm that zooxanthellae have the ability to adjust to spectrally distinct light fields in something called ‘chromatic adaptation’. In other words, the types of photopigments found in Symbiodinium species or clades will not change, but their ratios will when they adapt to different colored lighting.

Manufacturer’s Suggested Retail Price (MSRP) The MSRP for the SKY luminaire is $869.95. Included is the SKY LED luminaire, power supply (rectifier) and cord, and Y-cable (This cable allows the same programming to be applied to two SKY luminaires and eliminates the need for adjusting individual lights) plus possible tax and shipping. Four mounting screws are supplied though some sort of optional suspension system will be required unless the light rests upon the top of the aquarium or other support.

Certifications The SKY power supply is UL (Underwriter’s Laboratory) and CE (an abbreviation for a French term ‘European Conformity’) certified.

Control System Control of the SKY can be done through the APEX controller or Bluetooth on a mobile device. Programming is easily done by adding ‘points’ on a linear time scale. Each point can be adjusted for light intensity (up to 100%) and spectral quality (using preconfigured settings or the ‘custom’ function). Downloadable firmware updates are a possibility.

There are several options available for the SKY luminaire, and they are:

SHIMZ SHIMZ is an optional optical diffuser that blends the multi-colored LEDs into a more or less homogenous light field. There are optical portals that allow the light generated by white LEDs to pass without diffusion, resulting in creation of the caustic network (referred to in the hobby as shimmer, glitter, etc.) MSRP is $14.95.

Mounting System Neptune Systems has configured the SKY luminaire to be compatible with many other light mounts. There is also a cable mounting system available at a MSRP of $34.95.

Methods and Materials Spectral qualities of the LEDs were determined by an Ocean Optics USB2000 spectrometer. Corrections were made for ‘electrical dark’ (noise). Measurements were made every 5 milliseconds, and five measurements were averaged. Further smoothing was made by setting boxcar at ‘5’. Data were exported to an Excel worksheet where further analyses was made by a proprietary program. Light intensity (Photosynthetic Photon Flux Density, or PPFD) was determined through use of an Apogee Instruments’ MQ-510 ‘underwater’ quantum meter. Underwater light intensities were measured in a 100-gallon Rubber Maid tub filled with freshwater. The tub is made of a gray plastic which minimizes reflection of light and overcame problems of reflected light influencing light measurements in testing done in glass or acrylic aquaria. PPFD measurements were made every 2 inches on center using three grids (at various depths) made of egg crate material. The luminaire was suspended 9.5 inches above the water’s surface. Photosynthetically Usable Radiation (PUR) and Kelvin were estimated by a Seneye Reef device. Power consumption was reported by the Wattage Report on Neptune Systems APEX.

In Closing Neptune Systems gave me two SKY units for evaluation. After extensive testing, I found advertising claims were accurate. But short-term testing doesn’t always tell the whole story. Instead of archiving these units, I decided to use them on a 120-gallon reef aquarium. Operating at no more than 30% power, these two provide more than enough light. The morning begins with the Coral Growth Mode and transitions to blue light later in the day to showcase coral fluorescence. Figure 54 is of a coral maintained under these lamps for several months. I’ll let it speak for itself.

54.jpg

Figure 54.
7.png
@Dana Riddle Curious about how the light was oriented with respect to the Rubbermaid container. If it is oriented such that the long sides are parallel, I would have expected the results to be rotated 90 degrees from what is shown in figures 47-51. Am I missing something?
 

Dana Riddle

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@Dana Riddle Curious about how the light was oriented with respect to the Rubbermaid container. If it is oriented such that the long sides are parallel, I would have expected the results to be rotated 90 degrees from what is shown in figures 47-51. Am I missing something?
Yes, long axes were parallel. I'll have to give the results another look.
 

lubeck

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Dana, curious to see how this coral looks today if your still using the light. Thank you for all that you do.
1643171823850.jpeg
 

smfenst

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Dana, with the schedule you described that you are using, do you keep the all blue portion at 30% also or did you change intensity?
 

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Just seeing if we can get a follow up on the long term results

What is it you are looking for? Still have my pair pre-retail over my 210 display. No complaints and they grow corals amazingly well. Is it the lighting my success? No, probably not. I am, however, very satisfied with the SKY's and glad I purchased them. I don't know what the future holds for them now as the recent mergers but that is a bridge I will have to cross once I finish my final upgrade.

Few shots below. Nothing fancy. Sorry for the mirror on the right as my Pink Square Anthias are being a bit of jerks to a new fish I introduced this past Friday (Milletseed Butterflyfish). Few SPS colonies are 100% grown under the SKY's. Few small frags I'm growing out now. There is a Maxima clam in there as some various leathers. I can't keep too many soft corals as my butterflies eat it.

Note: I am considering a final upgrade to accommodate the gold line rabbit and anthias (they are incredibly big). If the SKY's are available I will buy another pair. If for some reason they are not (merger, change, etc) then I would probably look at adding a pair of reefi uno 2.0 or phillips coral care gen 2. Probably the coral care because I like the panel design better although I know that doesn't necessarily translate to spread. Another possibility is Kessil's.

Note 2: I was part of the NSI testing so my lights have actually been in service longer than what has been available to retail. That doesn't really matter much other than to give you a time line for service.

Note 3: I wish they are a bit lower in price. I wish other lights from other manufacturers are also. That would be one of my negative comments. I think they would have hit a grand slam had they been a bit cheaper. Personal opinion.

In short:
  • Fans are silent
  • Surface of the light is clean. It isn't sticky.
  • No disco effect
  • Slight / small shimmer
  • While no recent PAR measurements there is no noticeable difference since installation
  • Easy to use via Fusion or App
  • Good presets built in

Tank info:
  • 210 US gallons (54 x 30 x 30)
  • 2 x SKY peak at 85%
  • Coral growth (all channels 100%)
  • Lights on 0700 off at 2100
  • Moonlight 5% 2100 - 0700
  • Parabola pattern as I believe there can be a thing as too much light
  • Fish: Biota (4) pink squares, links goby, upside down goby, lyretail damsel, gold lined rabbit, milletseed butterfly, radial filefish, matted filefish
  • Fish: Divers den: Zosters butterfly, pyramid butterfly, Copperband butterfly
  • Fish: Divers den: Scopas tang

1692216409822.png


1692216470191.png


1692216510634.png


1692216541757.png


1692216571600.png
 

Helicopter Guy

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I am building
What is it you are looking for? Still have my pair pre-retail over my 210 display. No complaints and they grow corals amazingly well. Is it the lighting my success? No, probably not. I am, however, very satisfied with the SKY's and glad I purchased them. I don't know what the future holds for them now as the recent mergers but that is a bridge I will have to cross once I finish my final upgrade.

Few shots below. Nothing fancy. Sorry for the mirror on the right as my Pink Square Anthias are being a bit of jerks to a new fish I introduced this past Friday (Milletseed Butterflyfish). Few SPS colonies are 100% grown under the SKY's. Few small frags I'm growing out now. There is a Maxima clam in there as some various leathers. I can't keep too many soft corals as my butterflies eat it.

Note: I am considering a final upgrade to accommodate the gold line rabbit and anthias (they are incredibly big). If the SKY's are available I will buy another pair. If for some reason they are not (merger, change, etc) then I would probably look at adding a pair of reefi uno 2.0 or phillips coral care gen 2. Probably the coral care because I like the panel design better although I know that doesn't necessarily translate to spread. Another possibility is Kessil's.

Note 2: I was part of the NSI testing so my lights have actually been in service longer than what has been available to retail. That doesn't really matter much other than to give you a time line for service.

Note 3: I wish they are a bit lower in price. I wish other lights from other manufacturers are also. That would be one of my negative comments. I think they would have hit a grand slam had they been a bit cheaper. Personal opinion.

In short:
  • Fans are silent
  • Surface of the light is clean. It isn't sticky.
  • No disco effect
  • Slight / small shimmer
  • While no recent PAR measurements there is no noticeable difference since installation
  • Easy to use via Fusion or App
  • Good presets built in

Tank info:
  • 210 US gallons (54 x 30 x 30)
  • 2 x SKY peak at 85%
  • Coral growth (all channels 100%)
  • Lights on 0700 off at 2100
  • Moonlight 5% 2100 - 0700
  • Parabola pattern as I believe there can be a thing as too much light
  • Fish: Biota (4) pink squares, links goby, upside down goby, lyretail damsel, gold lined rabbit, milletseed butterfly, radial filefish, matted filefish
  • Fish: Divers den: Zosters butterfly, pyramid butterfly, Copperband butterfly
  • Fish: Divers den: Scopas tang

1692216409822.png


1692216470191.png


1692216510634.png


1692216541757.png


1692216571600.png
Beautiful tank. I am in the process of designing my next tank which is a 120 x 30 x 30, would you recommend them for this and how many would you use? The tank will be mostly SPS / LPS.
 

areefer01

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I am building

Beautiful tank. I am in the process of designing my next tank which is a 120 x 30 x 30, would you recommend them for this and how many would you use? The tank will be mostly SPS / LPS.

If I was upgrading to a display of your size and since "I" already have them, yes. I would continue to purchase and use them. I've been very satisfied with them. No issues. It is also a bit difficult for me to recommend a number as I only run a pair over my 210 gallon which is 54 x 30 x 30. So you are probably looking at 5 or 6 easy. Would depend on rock aquascape and light position. Width facing you vs side mounting. I have mine mounted 8" above the water surface.

Honesty in reefing. If I was buying new then I would look at Reef Fi Uno 2.0. Two reasons. First they come in at a lower price. Second, and more important to me, is all of the consolidation done in our hobby with BRS / Aperture. There is obviously product overlap so the question comes down to how is this managed, what stays, goes, etc. Radions probably won't go anywhere but SKY's? Who knows.

@telegraham has a pretty unbiased view of Reef Fi Uno's and actually liked the SKYs outside the price. If I remember correctly. Check out his work on lighting and that should help you more than I can. He is a good person.

Nice display size. All the best.
 

telegraham

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Check out his work on lighting and that should help you more than I can. He is a good person.
Very kind, and thank you!

@Helicopter Guy ... KC-135/B-2/YAL-1A aircraft electrician guy (ret) here. The @areefer01 recommendation is solid, as I consider the Uno 2 to be the best value in reef lighting, and I'm not one to share "bests." It's very powerful, has a complete spectrum (biology band/PUR) compared to other top-shelf lights, it comes with three spread options (no reflector/120°/90°, and another can be purchased), and it has a three-year warranty. It directly competes with the XR30 and Sky at half the price.

I paid the pre-order price for mine (not sponsored or paid for what I've shared) and it hangs between two GHL Mitras 7206 over my 400-day-old IM100.

IMG_7166.jpg


Google telegraham humblefish uno 2 for more.
 

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