led height and other ?

sante210 · 04/08/2011, 01:56 PM

So I ordered my leds.

My new tank is 36 x 18 x 24

I ordered 36 leds 24rb's and 12cw's

First question does anyone know about what heigth it should be above the tank

Also will a 4.5" x 23" heat sink be ok on a 36" tank?

Here's the led's I ordered
http://www.rapidled.com/servlet/the-...al-Blue/Detail

Also is it possible to paint the heat sinks with high heat paint as long as it's not on the base I mount them on?

Thanks in advance!

ufoman420 · 04/09/2011, 09:16 PM

leds dont put out any heat or very very little heat so the closer to the tank the better. It depends on what watt the leds are? I have 144 3watt leds on a 5'x2'x2' tank 160gal or so and it is a little dim still. I will be adding about 30 more to get the brightness i want, they are 6" above the tank top. I grow hard corals softies and all around variety. I would recommend looking at this sight satistronics.com Chinese company shipping is a little long but worth the price difference. I just built an led setup in my brothers nano and we used 6 10watt leds and all I have to say is wow!!! Funny thing is that those 10watt leds were just a few dollars more than the cree's your looking at. they have 600 lumen as well.

ufoman420 · 04/09/2011, 09:18 PM

as far as a heat sink i just used c channel from homedepot and that works so far so good. Have my leds running for 1 1/2years so far. No fans just the c channel. You will want a thermal glue. amazon has it a whole tube for 5bucks. The computer thermal paste will not hold the led to the c channel.

04/08/2011, 01:56 PM	#1
sante210 Registered Member Join Date: Apr 2010 Location: Discovery Bay CA Posts: 443	led height and other ? So I ordered my leds. My new tank is 36 x 18 x 24 I ordered 36 leds 24rb's and 12cw's First question does anyone know about what heigth it should be above the tank Also will a 4.5" x 23" heat sink be ok on a 36" tank? Here's the led's I ordered http://www.rapidled.com/servlet/the-...al-Blue/Detail Also is it possible to paint the heat sinks with high heat paint as long as it's not on the base I mount them on? Thanks in advance! __________________ -Mike Current Tank Info: Working on it

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04/09/2011, 09:16 PM	#2
ufoman420 Registered Member Join Date: May 2009 Location: Henderson, CO Posts: 54	leds dont put out any heat or very very little heat so the closer to the tank the better. It depends on what watt the leds are? I have 144 3watt leds on a 5'x2'x2' tank 160gal or so and it is a little dim still. I will be adding about 30 more to get the brightness i want, they are 6" above the tank top. I grow hard corals softies and all around variety. I would recommend looking at this sight satistronics.com Chinese company shipping is a little long but worth the price difference. I just built an led setup in my brothers nano and we used 6 10watt leds and all I have to say is wow!!! Funny thing is that those 10watt leds were just a few dollars more than the cree's your looking at. they have 600 lumen as well.

04/09/2011, 09:18 PM	#3
ufoman420 Registered Member Join Date: May 2009 Location: Henderson, CO Posts: 54	as far as a heat sink i just used c channel from homedepot and that works so far so good. Have my leds running for 1 1/2years so far. No fans just the c channel. You will want a thermal glue. amazon has it a whole tube for 5bucks. The computer thermal paste will not hold the led to the c channel.