I think the reason for over heating my array is because I placed 22 LED running at 700ma in a U shaped aluminum of 34" length.witch gives me a gap of aprox 1.4" between each LED.
I just placed another U shaped aluminum on the back side (with heat transfer grease) and turn the array on so far 15 minutes passed and its running warm that maybe the answer as more surface area for heat dissipationhttp://www.flippinghomes.com/images/...rs_crossed.jpg

I only run 12 LEDs over 5 feet of 1" fined heat sink. These are 3w Crees and that was the max recommended by RapidLed for that length. The 3w stars are about 4.5 inches apart.

That is crazy separation between LEDs I think I will need an AC fan or a couple to keep my array cool anyone knows where to find such a small diameter fan that run of AC power?

I went back and removed all 28AWG as I see that I used 22AWG on the array over my tank,thanks to DiverDude and mike31154 made me go and check:biggrin:

I think I got it from B&E by your recommendation about a year ago and I must say that I love it:biggrin:

While waiting for a couple fans and a heat sink here are couple photos of the 80% finished array:biggrin:

Here is what I am placing as lens on each LED as I had some laying around from a prior DIY with some phylips LED and must say these lens fit perfect.
http://i726.photobucket.com/albums/w...y/IMG_1856.jpg

All lens are on tight,last night I cut and bent an acrilic sheet for a cover I must say it turned out a perfect shield:biggrin::biggrin:
http://i726.photobucket.com/albums/w...y/IMG_1858.jpg
http://i726.photobucket.com/albums/w...y/IMG_1859.jpg
http://i726.photobucket.com/albums/w...y/IMG_1857.jpg

and now its wired and ready

http://i726.photobucket.com/albums/w...y/IMG_1863.jpg

Plug is going into the wall and voila

http://i726.photobucket.com/albums/w...y/SDC10366.jpg
http://i726.photobucket.com/albums/w...y/SDC10368.jpg
http://i726.photobucket.com/albums/w...y/SDC10369.jpg

Man its bright too bad the camera doesn't do it any justice.

Nice LED build. I imagine you were seeing spots after testing out the fixture.

Nice! One question, how do you get air evenly into here?

Because its a small array and not running at full blast,room temperature keep it cool with no added fans.
Although because I have 22 led and max at 700 ma it I was to run it at full shouldn' t br a problem in my case as it sits near 2 other arrays with high power fans to keep it cool.

In the next couple weeks I will have another build for my 220glns and another for the frag tank.Using similar design as above but their own fans