Chinese LED Lights

those numbers seem pretty high for 24" on 3w leds
You would be surprised what optics can do, and they consume about 2 watts a piece.

My IT2080's are 8" off the water and have 90 degree lenses. At 22" and 100% on both channels, I'm getting between 250-275 PAR with an Apogee meter. So not far off from what Logan quoted. And I don't use carbon in my system, so my water probably/likely isn't as clear as it could be. :thumbsup:
my fixtures were at 6", so sounds about right to me
 
My IT2080's are 8" off the water and have 90 degree lenses. At 22" and 100% on both channels, I'm getting between 250-275 PAR with an Apogee meter. So not far off from what Logan quoted. And I don't use carbon in my system, so my water probably/likely isn't as clear as it could be. :thumbsup:

the 250-275 did not seem high, the 500 on air did, I have never seen differences this great from air to water, but I run carbon all the time
 
the 250-275 did not seem high, the 500 on air did, I have never seen differences this great from air to water, but I run carbon all the time

air/water very little difference unless your talking about feet, my par meter cant tell the difference, you also get some reflection from the glass back into the tank, at tank depths of less than 36" there is very little difference air vs water, unless you have some major algae or water clarity issues, inverse square law is a btch

Your earlier comment about there being very little difference between air and water in the transmission of light doesn't match up with my experience using an Apogee PAR meter. Not that I've done any tests... but since I've got one, maybe I should give it a try. Have you ever tested this yourself?
 
So if the it 2080 is 36 inches long. At 6 to 8 inches above water. How wide does it adequately cover. Assuming do not want shadows. 44 ? Additional 4 inches per side ? Assuming 90 degree optics.
 
Whats the difference in the 90 and 120 degree optics ?

I'm gonnna get the IT 2080 32" for my 75 gallon mixed reef...

You guys think this is a good choice ??? or would two 16inch's be better? (more expensive though)
 
So if the it 2080 is 36 inches long. At 6 to 8 inches above water. How wide does it adequately cover. Assuming do not want shadows. 44 ? Additional 4 inches per side ? Assuming 90 degree optics.

The IT2080 is 32" long, not 36". And in your case, with a really long tank, that is a serious difference.

That said, I think the IT2080 with 90 degree lenses and over a 34" deep tank (right?), it should cover an extra 6-8" on each end. You could get more coverage (at slightly lower PAR) by installing some 120 degree lenses at the last 2 or 3 rows of leds at both ends (and do the moonlights and all red, green, violet and UV leds at the same time). You can also stagger the lights so the 2 in back are 16" offsetleft to right compared to the 2 in the front row.

Whats the difference in the 90 and 120 degree optics ?

I'm gonnna get the IT 2080 32" for my 75 gallon mixed reef...

You guys think this is a good choice ??? or would two 16inch's be better? (more expensive though)

I think the IT2080 is capable of doing the job, however, you may get some shadowing at the extreme ends of the tank with 90 degree lenses. Get enough extra 120degree lenses to do 2-4 rows at both ends, Maybe all 4 for 2 rows and then just the middle 2 leds in the next 2 rows which should cast a little less light out front and back and still get some out to the ends (and do the moonlights and all red, green, violet and UV leds at the same time). And if you are doing a serious (or not so serious) mostly sps tank, you might be better off with 2 of the IT2040's. BTW my 2040 runs super cool, both my 2080's run just a bit warm. And to be fair, I'm only 5 weeks into using my EG lights, but they have been trouble free so far and I like them better that my EcoTech Radion, especially at half the price! The Radion is for sale if anybody is interested. :blown:
 
Hey anyone know the light footprint of the Nova A4 w 90* optics on them?
24/24 or was it 36/36?
I'm switching from a 30 inch tall tank to a 24 inch tall tank and wonder if I can get more coverage from them.
Thanks,
Corey
 
Ron.. why it 2040? over the 2080? i get the 120 degree optics but here is another thought what do think. do 5 of them two in back and two in front all parrell and them one in the center prependicualr .. in other words there is a center cross brass and the fifth one would basically divide the left and right. fill in the gap and that way i could put the others at the left and right end of the tank? kinda like this = | = Thoughts?

thanks
 
Im loving my new IT280's! Ive seen significant increase growth and color with just having them about three weeks. One thing that Im a little dissapointed about though is that Im not quite getting full coverage at the ends of my 48" tank. They are currently at about 6" off the water and have 120 degree optics. Ive been slowly ramping them up 5% a week as Logan suggested and glad to say havent bleached any corals yet.

Im thinking maybe as I ramp up to the higher end the coverage will be better? Or maybe I will need to add one of the 120 units to get stronger coverage on the ends? Any suggestions? Overall I love them though :)
 
Used leds

Used leds

So Looking used older Chinese set up. The tank pictures don't look to bad. I am looking at this to get started, then up grade later. I don't have a tank set up yet but want to be able to grow what ever I want. What are your thoughts on this LED combo.. ?? Thanks for any input!! Oh yeah forgot to add he wants $100

total 42 3W LED, 6 UV leds, 18 RB, 16 cool white, 1 red, 1 green
- full spectrum for a good coral growth, easily keep sps with this light.
- removable 90deg optics for each bulb except UV bulbs
- used for less than 2 years on my reef tank
- dimension 20inch*10inch*5
- built in digital programmable timers for three channels
- two dimming knobs for different channels.
- come with transformer (120-220v), mounting brackets

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About to buy 2 reef breeder 120 value units. Should I customize there layout at all? Or is the standard layout of colors good to go? Also anybody know if you customize can you add moonlights? Thanks. GREAT THREAD! question might already have been answered but by page 20 my eyes hurt lol.
 
So Looking used older Chinese set up. The tank pictures don't look to bad. I am looking at this to get started, then up grade later. I don't have a tank set up yet but want to be able to grow what ever I want. What are your thoughts on this LED combo.. ?? Thanks for any input!! Oh yeah forgot to add he wants $100

total 42 3W LED, 6 UV leds, 18 RB, 16 cool white, 1 red, 1 green
- full spectrum for a good coral growth, easily keep sps with this light.
- removable 90deg optics for each bulb except UV bulbs
- used for less than 2 years on my reef tank
- dimension 20inch*10inch*5
- built in digital programmable timers for three channels
- two dimming knobs for different channels.
- come with transformer (120-220v), mounting brackets

It's an interesting looking unit. I wouldn't exactly call it a 'full spectrum' light, but it's better than most other leds that are 2 years old. And the single fan is a small concern as well, will it cool enough, how much noise does it make, if it dies how warm/hot will the unit get? I wouldn't go $100 on a light this old when I can get a new light with true full spectrum color, 55 3w bridgelux leds (probably better coverage and smaller box), 3 quiet fans and I know runs very, very cool and only pay $180. But that's just my opinion... good luck.
 
... I wouldn't go $100 on a light this old when I can get a new light with true full spectrum color, 55 3w bridgelux leds (probably better coverage and smaller box), 3 quiet fans and I know runs very, very cool and only pay $180. But that's just my opinion... good luck.

I'd have to agree, that thing looks a bit crude compared to current ones.

But how does one determine which current models have the quiet fans before purchasing? The unit I got used sounds like a server rack in a datacenter.

- D
 
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