Chinese LED Lights

ssdawood said:
This is the problem on only half houe increments. If the fixture looses power memory is lost. If you use one hour increments you will be fine. I think some problem with controller. All fixtures have it.
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Thanks, I'll check it out...BTW, I don't loose what's in memory, it just doesn't revert to my custom setting when power comes back on.
 
MikesReef83 said:
Does anyone have any experience or know anything about this light. It claims to have CREE leds. I would much rather go with cree but RB doesn't offer them.
http://www.ledgrowlights.cn/detail.asp?id=319
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Nammy said:
Yup that's what I have. Other than you have to manually switch it back to custom when the power goes out, it’s great!
Very well built, great light output. Impressive right out of the box!
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Did you notice it is only blue and white leds? And it's a 5:4 ratio of blue to white, that's terrible... unless you want to bleach coral and grow algae? And why do you want Cree leds? You can't run the Bridgelux leds at 100% (my IT2080 fixtures run about 65% on average with Bridgelux leds over a 24" deep 180g tank with 90 degree lenses). So you'll pay extra for Cree and then run it at 50% instead of 65%... why?

Don't get me wrong, half the people who follow leds here on RC will tell you I'm one of EverGrows biggest supporters. I bought 6 fixtures for my 4 tanks back in Dec 2012 (2 IT2080, 1 IT2040 and 3 D120). So I'm saying, yes, buy EverGrow led fixtures, but don't buy that one and buy it from a US distributor. But just get the EG standard full spectrum layout from their distributor, Ocean Revive or the rebrand version from Reef Breeders. You get full spectrum, enough light that you won't be running at 100%, the same quality build, US based support (including free shipping and US inventory).
 
I have the IT2080 Controllable Full Spectrum LED (32" Light).
This is the Warranty Information I have

"The Evergrow lights come with a 3 year warranty. Warranty issues are handled a couple different ways:
1. if it is minor we can send parts at no charge for customer to swap out(if comfortable with fixing own unit).
2. You ship unit to our address either in Washington/Canada (whatever works best for you) and we fix unit and send back(In over a year of selling the Evergrow line i have not had even 1 unit come back for repairs/replacement).

For the full 3 years of the units warranty return Shipping is completely paid for and the cost of shipping the unit to us will be applied to an in store credit which can be used at any time on any item.
 
So I was just looking at the pictures on each website. THe reefbreeders rebrand does appear different. Case has 2 vs 3 fan openings. The oceanrevive light pic shows the reds/greens etc. (Photoshop though for illustration?) vs the pic on the reefbreeders visually just looks blue/white.

Was the value D120 one where you could have them swap leds too? Or just more fancy versions. If so would I want to maybe have them swap some blue's around etc? I get lost in all the different nm's of light nad worry about getting the right mix of everything and getting that strong fluoroscent pop.

Already asked in another thread, but for more views and this ones a little more appropriate. 215 gallon 72 x24?x30 tall. 90degree optics I know, but should I be using 3 or 4 fixtures if I go with 16 inch D120's? Or better off with a single larger fixture of someones?

On a budget atm otherwise I might go w/ built in controllers. For now just want dimmable and able to be put on a simple timer. If I can wire it later for a ledgroupbuy controller later that's great.
 
Ron Reefman said:
3 P16's will give you roughly 150 leds, 1 P48 is only 100 leds. I'd go for the 3 P16's.
More light, better coverage, Ability to 'offset' one fixture more forward over the tank for less contrast looking light, run them at lower power, potential for a lot more PAR, better back up should a fixture fail (3 vs 1)... it's a no brainer IMHO.
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See above post. How do you quote multiple posts?
 
Ron Reefman said:
Did you notice it is only blue and white leds? And it's a 5:4 ratio of blue to white, that's terrible... unless you want to bleach coral and grow algae? And why do you want Cree leds? You can't run the Bridgelux leds at 100% (my IT2080 fixtures run about 65% on average with Bridgelux leds over a 24" deep 180g tank with 90 degree lenses). So you'll pay extra for Cree and then run it at 50% instead of 65%... why?

Don't get me wrong, half the people who follow leds here on RC will tell you I'm one of EverGrows biggest supporters. I bought 6 fixtures for my 4 tanks back in Dec 2012 (2 IT2080, 1 IT2040 and 3 D120). So I'm saying, yes, buy EverGrow led fixtures, but don't buy that one and buy it from a US distributor. But just get the EG standard full spectrum layout from their distributor, Ocean Revive or the rebrand version from Reef Breeders. You get full spectrum, enough light that you won't be running at 100%, the same quality build, US based support (including free shipping and US inventory).
Click to expand...
First of all, I highly doubt that true Bridgelux leds are in there. Bridgelux.com won't list them in the product list.
Secondly, Cree leds have a few distinct advantages over no-name Chinese leds/ old blue Bridgelux. 1. They have a maximum driver current of 1500ma or greater, versus 700ma as is typical with Evergrow and Reef Breeders.
Second, they are vastly more efficient. Using the lumen output of whites as an example, no-name brand leds tend to be around a third less efficient, sometimes worse. That goes from 120lm/w to 80lm/w, which is as good as T5 lights. Granted, Ever Grow and Reef Breeders lamps are probably better, but there is no replacement for a quality 3w led.
I love Reef Breeders and Ever Grow lights. I recommend them often as a budget choice for those who wish to get into led lighting. They are full spectrum and are pretty reliable. However, you can't claim that they are the equal of or better than Cree leds in terms of quality.

I agree with you 100% that the original light linked to is no good. Very little chance (read: nonexistent) that there are Crees in there. And the 5:4 blue:white means that the whites are probably high-kelvin, which is not as good as lower kelvin whites except in special circumstances.
 
Gillguy said:
Anyone ever try these. Great price. Made by Dsuny in China.

http://www.dhgate.com/product/dsuny-60w-smart-led-aquarium-lights-lamp/161312473.html

http://www.dsuny.com.cn/
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They are 1:1 ratio of blue and white leds. Most of the other led fixtures are going more and more blue. Most are 2:1 blue to white and some are even 3:1. Your corals like the blue and use just a very little of the red spectrum from the white leds. The white leds are in there more for us than for the coral. And at even 3:1, you can run the blue channel at 100% and will only need to run the white channel at 40%-60% to get a white 10K-12K color temperature. I want that color temp with both channels running at the same power.

And you don't want 60 degree lenses unless the tank is more than 24" deep.

This is a good fixture for a fish only tank.
 
Ron Reefman said:
They are 1:1 ratio of blue and white leds. Most of the other led fixtures are going more and more blue. Most are 2:1 blue to white and some are even 3:1. Your corals like the blue and use just a very little of the red spectrum from the white leds. The white leds are in there more for us than for the coral. And at even 3:1, you can run the blue channel at 100% and will only need to run the white channel at 40%-60% to get a white 10K-12K color temperature. I want that color temp with both channels running at the same power.

And you don't want 60 degree lenses unless the tank is more than 24" deep.

This is a good fixture for a fish only tank.
Click to expand...

both my lights under my 40g reef have a ratio of 1:1 white to royal blue. i would definitely prefer a 3:1 or 2:1 ratio for my eyes but my corals seem to be doing well
 
ok this thread has been great.. i have a couple of the it2080. mine came with a few red and few green. thinking about removing. the red cast is a little to much for me. what have others done with reds and greens..

thanks
 
Ok Ron or anyone else.I would like your opinion on these three units. They are made by a Chinese company named LT. I have been quoted prices for all three. Models SL-A003-90 and SL-A008-90 have the same amount of power. 48pcs 3 watt leds but the difference is that the A003 is not dimmable and the A008 is dimmable and programable with a wireless remote. The other difference is the layout. A003 is straight rows and the A008 is in round clusters like the Radions. The A003 non dimmable and only offered with Bridgelux leds and is $135 plus $90 shipping to USA. The A008 is $190 with Bridgelux leds and $45 more for the CREE leds. My question is does the layout really matter and is it really worth paying extra for the CREE leds. I know the controlability is a preference only.

The third fixture is SL-A002-90, a full spectrum light that is similar to the A008 in that it is programable. It is also available with CREE but the layout is like the A003 with staright rows. It also has more power, 240 watts with 80pcs 3 watt each. That price is $310 for Bridgelux and $360 for Cree. All three models are offered in 12, 24, and 36 inches. The 90 models are 36 inches. I've included layouts for two models. Don"t have layout for A008. What are your thoughts. Thank you

Sl-A003-90
http://sosciled.en.alibaba.com/prod...oral_reef_led_lights_aquarium_SL_A003_90.html

SL-A008-90
http://sosciled.en.alibaba.com/prod...led_aquarium_light_fixture_of_SL_A008_90.html


SL-A002-90
http://sosciled.en.alibaba.com/prod...ed_aquarium_lighting_with_remote_control.html
 

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The SL-A003-90 isn't dimmable and for me, I don't need more info. I would never consider a fixture that isn't, at the very least, dimmable. I also don't see any list of led wavelengths? Did I miss it?

The SL-A008-90 is dimmable, but the stock fixture is 1:1 blue to white. I want a 2:1 at the very minimum and 3:1 or even 4:1 if I can get it. Now it says you can customize it, so that's OK if that's what you want to do. I did it with my EverGrow fixtures and it turned out OK, not great, but OK. I know more now than I did 10 months ago and I'd do them differently if I was doing it again.

The SL-A002-90 Is still very close to a 1:1 blue to white ratio. And with that many white leds, you don't need any green or red leds. There is more than enough red spectrum in the white leds for the corals. Cree leds sound great, but do you really need them? And what Cree model leds are they. The older Cree aren't much better than the other brands, and they cost about the same, so why are they charging more? Because you see the name Cree and think it's better. They were better back 2-3 years ago. But today, this fixture wit a 3:1 blue to white ratio (which isn't what they offer) and Bridgelux brand leds would not need to run at 100% power to keep corals happy. So why pay for the Cree?

Take a look at how I explained it here:
http://www.reefcentral.com/forums/showpost.php?p=21873693&postcount=3

Basically it boils down to this, the blue is for the corals and the white is for our eyes. At 1:1 you can turn the blue up to 100% and at 30-50% white, the tank will look white. Adding more white won't make the tank much more white and it will raise the PAR, but most of that additional white light and added PAR is light the corals don't use and may even cause issues for the corals. Red leds (and any other colors besides blues and UV) are not needed with fixtures that are 1:1 or even 2:1 blue to white, IMHO. Your corals will get enough red from the white leds. If you get to a 3:1 or 4:1 ratio, then some red only leds could be useful, especially if you run the tank more blue in overall color. But that's just my opinion and it's subject to change as I learn more! :lolspin:
 
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OK so a 3:1 ratio of blue to white is better and the Bridgelux leds are good enough. What then do you think of the round cluster layout for the A008. Is the spread going to be good enough and which optics do you recommend. The lights will be 14 inches above the water. I plan on using this along with four T-5 lamps, two each along the side of the led fixture. If I can get them to customize the A008 to a 3:1 ratio what proposal as far as which leds do I remove and replace with the blues and which blues. They offer three colors, 420, 447, and 460. Here is the stock layout for the A008. The picture shows three clusters but th 90 model has four. Tell me what you recommend. Thank you

The layout of SL-A008-90

the first channel（16pcs）：Whiter 14000-180000K 16PCS
the second channel（16pcs）：royal blue 447-450nm 16PCS
the third channel（12pcs）：purple 420-440nm 4PCS + red 655-660nm 4PCS + green 520-530nm 4PCS
the fourth（4pcs）：blue 450-460nm 4PCS
 

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