Kessil 360X Testing

[Dana Riddle]

A Kessil 360X was suspended 6" off the water surface. Testing showed maximum PAR generated at about 50% on the Color dial, and 100% on intensity. No water surface agitation. Measurements made with an Apogee MQ-510 quantum meter at a depth of 17 inches.

 

[TheEngineer]

Thanks for sharing! I still think the Kessils have the nicest color blending of any light out there. This seems to be a substantial power increase over the previous generation. IIRC they were only putting out something like 150 PAR 6" down.

 

[Dana Riddle]

Same set up, but measurements taken at a depth of 8 inches.

 

[MSB123]

Awesome! Any chance ou have a chart like that for the a360we? For comparison between the two.

 

[declanisadog]

Well done!

 

[Dana Riddle]

Awesome! Any chance ou have a chart like that for the a360we? For comparison between the two.

Here you go!

 

[Dana Riddle]

Thanks to @madweazl for lending the lamps for testing!

 

[oreo54]

A Kessil 360X was suspended 6" off the water surface. Testing showed maximum PAR generated at about 50% on the Color dial, and 100% on intensity. No water surface agitation. Measurements made with an Apogee MQ-510 quantum meter at a depth of 17 inches.

Ok, this always bugs me .. Is it 6" off the water surface and 17" down for a total of 23" from light to substrate??.....

This sort of is a nagging issue...

 

[Dana Riddle]

Ok, this always bugs me .. Is it 6" off the water surface and 17" down for a total of 23" from light to substrate??.....

This sort of is a nagging issue...

Why?

 

[naoki]

Do you happen to measure the power consumption at the AC plug?

 

[TheEngineer]

Why?

I think theyre just asking to understand

 

[oreo54]

Why?

Because many times it's not clear how it is measured..Too much room for inference..

Is it so hard to say 17" from where to where?
This isn't about you in particular, just an overall obtuseness to measurements


Hate as-u-me-ing..

Ends up in the "PAR" category ..

I'm NOT the only one..
https://www.nano-reef.com/forums/topic/363401-detailed-ai-prime-par-readings/

I wonder what the 30cm 45cm and 60 cm are, length above water line

It could very well be from the light itself, I know when I spoke with AI they informed me that the charts on their site are based on being away from the light itself, not underwater.

See pss poor definition..

 

[wesman42]

Why is the PAR so low comparably to the 360WE?

 

[Dana Riddle]

To clarify - the lamp is 6" off the water surface (at the owner's request), and measurements taken every 3.5" on a grid system, for a total of 40 at a depth of 17" (13" and 8" as well), so 17" + 6" = 23" from sensor to business end of the lamp.

 

[Dana Riddle]

Why is the PAR so low comparably to the 360WE?

The 360x has a dispersion angle of 130 degrees, and I suspect this accounts for the difference (although I need to dig through Kessil's specs to verify - the angle for the 360W isn't readily apparent (at least I didn't see it when browsing.)

 

[wesman42]

The 360x has a dispersion angle of 130 degrees, and I suspect this accounts for the difference (although I need to dig through Kessil's specs to verify - the angle for the 360W isn't readily apparent (at least I didn't see it when browsing.)

Interesting information, thanks. So a wider angle, and less intensity because of the wide angle. What else would be the allure with the X?

 

[kkiel02]

Why is the PAR so low comparably to the 360WE?

I’m also a little disappointed in these numbers. I thought they had higher output but I guess the 130 degree lense spreads it out too much. I do like the spread of it I just wish it had more par.

 

[Adam G]

Dana,

Just finishing up my tank build and trying to decide on which lights to go with this time around. My Hydra 52s have served me well but it is time for something new. What are your thoughts on these PAR measurements?

My tank is 28” deep. I really wanna try these lights but I just don’t think that’s enough power for SPS and a 28 inch deep tank. I think even if a put one every 12 to 15 inches they would be hard-pressed to have 100 par on the Sand and 300 par at 12” deep.

Is there something that I missing here? Is it a PUR vs PAR thing? How does one grow SPS 18 inches down with these things? 150 PAR just does not seem like enough. You would think with Kessil being as reputable as they are would make a light that could grow SPS at 18 inches of water depth. Love the color they produce and would love to give them a try. Please share your thoughts. Thanks in advance.

 

[Peter K]

Dana,

Just finishing up my tank build and trying to decide on which lights to go with this time around. My Hydra 52s have served me well but it is time for something new. What are your thoughts on these PAR measurements?

My tank is 28” deep. I really wanna try these lights but I just don’t think that’s enough power for SPS and a 28 inch deep tank. I think even if a put one every 12 to 15 inches they would be hard-pressed to have 100 par on the Sand and 300 par at 12” deep.

Is there something that I missing here? Is it a PUR vs PAR thing? How does one grow SPS 18 inches down with these things? 150 PAR just does not seem like enough. You would think with Kessil being as reputable as they are would make a light that could grow SPS at 18 inches of water depth. Love the color they produce and would love to give them a try. Please share your thoughts. Thanks in advance.

I know they are supposed to be releasing focusing lenses later this year to increase penetration, which will help the par at deeper depths.

 

[User1]

If my no surface agitation do you mean calm waters? Test reminds me a lot of horse power and torque ratings. It is different at the crank shaft compared to rear wheel. I guess my point is that we all have water movement be it power head, surge, return pump, or other.

I understand time is money - if you haven't already done, maybe these are just teasers, are you able to test with water movement and possibly raise the height of the lights? 18 - 22" above surface? Maybe give a wider spread.

Edit: Forgot to say thanks for sharing and your time. I did not mean to be rude.