I think that this will take care of any cooling issues

used Aluminum Heat Sink 9 7/8" x 6" x 2 ", 388sq Dissip - eBay (item 180626613955 end time Feb-22-11 11:05:02 PST)

And I know I have some old pc fans laying around too. This will take care of the 24V

SCHIELE SYSTRON PS 24V 2.423.417.00 POWER SUPPLY - eBay (item 280618533522 end time Feb-18-11 10:27:33 PST)

Wont be too much longer before I start building this thing I hope.
mx4intx Reviewed by mx4intx on . Calling out to Weezard for LED advice My friend, I've read your stuff here and at Steve F.'s site. I want to build a dedicated flowering lamp using Ledengin 15 watters. (4 reds, 1 blue, and possibly 1 warm white; LM 317's so I can tweak the ratios.) Essentially, a copy of your 4+1 cake pan lamp but built on a 4 x 18" finned heatsink so I can see what's going on under it.) If I were to post my picks for power supply, resistor ratings / values, etc., would you critique and perhaps offer some guidance? I have already purchased Rating: 5