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Originally Posted by jgrog76
I bet with those optics and spacing if you turn the LED up to 750mah or so you will not need any more light for the corals you have. I made a fixture out of the square aluminum also and it got too hot to touch quickly. I added a small 12v cpu fan to one end that blows through the tubing. I never measured the temp difference but now I can hold my hand on any part of it without burning myself.
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Jgrog76, I wonder why your setup is too hot to touch. On my setup using 1/16" thick aluminum square only goes up to 100F on full blast even after hours of use. It is just warm to the touch. At first I thought I am going to have issues but to my surprise, the 1" square tube handled it really well.
Quote:
Originally Posted by Just2Many
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Thank you.