bysenled.com

[liz62]

Interesting. I wounder what mA they are driving the LEDs at

If they are the CREE Q5 driven at 700mA they would need one heck of a heatsink if its the same size as the Aussi 1 watter. The AI Sol has 24 XP-E LEDs and a very well thought out thermal management design.

The problem with a lot of these Chinese fixtures is they skimp on the heatsink and generally last as long as the fans do.

As far a looks the D3 bin of the Royal blue is good I prefer D316 or D315. The Cool white should be WC or Cooler.

I would see one on a reef tank first and see how hot it gets and if the corals look good.

Interesting in as good or bad??
I have sent all of your questions off in a email for some answers.

Here is some info.
Reefing The Australian Way Forums • View topic - BSLED Thread (LED light unit from china)

 

[SeeingGreen]

In case I missed it, what was the cost? I would like to compare to my build.

 

[liz62]

$189 Us plus shipping per 120 watt fixture

 

[wld1783]

40 Cree XR-E LEDs, Drivers, Heatsink, Fans and Housing for $189???

Caveat Emptor

Still dont know how many mA each LED receives. Many call a 120 fixture with 40 3 watt LEDs 120 watts even though they are driven a lot less to compensate for a small heatsink...Size Matters...

Also would like to see the spectrum...As specific Binning and individual LED drive current were not mentioned.

I personally drive my 3 watt LEDs at 700 mA

The proof is in the pudding.

I'd like to see results with growth and a PAR meter on a established reef tank before I buy this one.

Also what about some Pics and a PDF Data Sheet...The Aussi post was the typical 1 watt Chinese fixture found every where.

 

[btkrausen]

40 Cree XR-E LEDs, Drivers, Heatsink, Fans and Housing for $189???

Caveat Emptor

Still dont know how many mA each LED receives. Many call a 120 fixture with 40 3 watt LEDs 120 watts even though they are driven a lot less to compensate for a small heatsink...Size Matters...

Also would like to see the spectrum...As specific Binning and individual LED drive current were not mentioned.

I personally drive my 3 watt LEDs at 700 mA

The proof is in the pudding.

I'd like to see results with growth and a PAR meter on a established reef tank before I buy this one.

I posted under your sponsor forum but no response? At least this thread has been giving me plenty to keep me busy, haha

 

[Troylee]

Sounds way to good to be true..... I wouldn't trust them lol....

 

[wld1783]

Just catching up...

Things been way busy...LEDs are the future to Reef Lighting...

Will reply there...

 

[btkrausen]

Just catching up...

Things been way busy...LEDs are the future to Reef Lighting...

Will reply there...

Thanks. Will be continuing to read here as well for some great information.

 

[FiReBReTHa]

89"L x 20"w x 18"D

It is actually a 8 ft tank but I have a coast to coast overflow at one end.

I was told that I need 5 units for my size tank but I think I can get by with 4 with 90 degree optics?

you have that nice of a tank and you are skipping out on lighting?

Most people will tell you one of the mistakes they have made in this hobby comes from trying to save a couple of dollars and going cheap route and later on having to redo their purchase. Dont risk your SPS.

$189 Us plus shipping per 120 watt fixture

Perfecto Manufacturing 972098 Reef Capable LED Lighting System

The marineland fixture is not even that cheap and I would not recommend it to anyone.

 

[liz62]

Interesting. I wounder what mA they are driving the LEDs at

If they are the CREE Q5 driven at 700mA they would need one heck of a heatsink if its the same size as the Aussi 1 watter. The AI Sol has 24 XP-E LEDs and a very well thought out thermal management design.

The problem with a lot of these Chinese fixtures is they skimp on the heatsink and generally last as long as the fans do.

As far a looks the D3 bin of the Royal blue is good I prefer D316 or D315. The Cool white should be WC or Cooler.

I would see one on a reef tank first and see how hot it gets and if the corals look good.

This is the reply that I got when I posed your questions:

a.for a singal Cree led, we can drive at 700mA, it is the maximum current for 3watt Cree leds. but if we make all the 40pcs 3watt Cree leds together,no company can drive them at 700mA, because this current will creat too much heat,this will effect the performance and life-span of the whole light. what's more, there is very few 700mA led driver on the market, also this is the technology limited of the leds.

b.please rest assured that the heat sink of our light is very good for heat dissipation. the size is suitable for the case of our light,meanwhile there are many grooves to increase the area of heat dissipation. we make so many 120w cree led aquarium light for our customers, the lights work very well and there is no problem of heat dissipation.

c. for the royal blue, it is 450nm, this is the best color for coral growing, also this color can make good environment for your corals.

d.cool white is very good for coral growing, this color can make corals full of vigour,all the customers make led aquarium light use cool white leds. according to our customers'feedback and research, 16000k--cool white is your best choice.

 

[CJO]

There is your answer. It sounds like they drive them all in series with one driver. My guess is that they are driving them at closer to 300mA, which will result in much less light. It is fairly easy to find 700mA and up drivers, but you have to run several of them to compensate for the forward voltage of the LEDs. You also have to have a significant way of cooling them to drive them that high as well.

CJ

 

[liz62]

I got this in a second email don't know it helps? is good or bad?

Regarding to your questions ,700mA we driving the leds at .
led's CREE Q5 ,the power change the AC to DC ,then the leds work under DC .
I donot know what is your meaning of "bin ",we welding the leds on the PCB panel .
we use cool white (14000-2000k ).usually we use 16000k ,this is most of our customers like .

 

[Troylee]

each led has it's own bin numbers which is like grade "a" or "b" etc.... of course we want the grade "a" it has the best color best lumen per watt output etc..... sounds like there just buying the cheapest ones possible and throwing a fixture together what you will notice is some are brighter and the colors will differ in the whites etc....even thou they are all cool whites they won't match if each one don't come from the same bin...

 

[liz62]

each led has it's own bin numbers which is like grade "a" or "b" etc.... of course we want the grade "a" it has the best color best lumen per watt output etc..... sounds like there just buying the cheapest ones possible and throwing a fixture together what you will notice is some are brighter and the colors will differ in the whites etc....even thou they are all cool whites they won't match if each one don't come from the same bin...

Ok I sent another email asking again what the bin numbers are. I suspect though that these fixtures will be able to sustain my SPS - I mean 120watts with 3 watt crees on a 18" deep tank should be enough shouldn't it?

 

[FiReBReTHa]

Its bad, the company doesn't know what they are doing.



If they are correct that the LEDs cant go over 700mA then they are not Crees.

If they are Crees than the company doesn't know what they are talking about.


Dont bother emailing them anymore, they are going to tell you whatever to try to sell it.

You asked if its a good fixture, no I dont think it is.

 

[CJO]

I got this in a second email don't know it helps? is good or bad?

Regarding to your questions ,700mA we driving the leds at .
led's CREE Q5 ,the power change the AC to DC ,then the leds work under DC .
I donot know what is your meaning of "bin ",we welding the leds on the PCB panel .
we use cool white (14000-2000k ).usually we use 16000k ,this is most of our customers like .

I thought in the other post they said that they are not driving the LEDs at 700mA? Also, the Q5 LEDs only go up to 10,000K. Maybe they mean the blue and white LEDs combined are near that range?

CJ

 

[CJO]

each led has it's own bin numbers which is like grade "a" or "b" etc.... of course we want the grade "a" it has the best color best lumen per watt output etc..... sounds like there just buying the cheapest ones possible and throwing a fixture together what you will notice is some are brighter and the colors will differ in the whites etc....even thou they are all cool whites they won't match if each one don't come from the same bin...

You are thinking of something different. The white ones are Q5 bulbs. The bins basically just tell you a closer range on the colors. I have a paper here somewhere from Cree that shows the ranges. I'll put up a link when I find it.

CJ

 

[Troylee]

I think you made up your mind let us know how it does lol.... You get what you pay for right???

 

[FiReBReTHa]

I think you made up your mind let us know how it does lol.... You get what you pay for right???

+1

Let us know how it goes.

 

[liz62]

Actually, I have now put the whole led fixture on hold - I am not sure these fixtures will do the job or not based on what you guys have said? Not sure if the quality is good enough etc., etc.?
I obviously no nothing about LED's so I think I am back to searching for some other sort of light :(