sc2dave;4619715; said:I saw some cfl warm white 5000k bulbs,120v, about 15w.Is this a good color spectrum?
I'd probably go for cool white or daylight over warm white in most cases. Don't need much red spectrum in aquariums unless you have a specific plant or coral that requires it. Daylight CFLs provide plenty of red, provide a lot of the blue that plants need to veg, and look a lot more natural.
Here's a link to a good DIY LED build. http://reefcentral.com/forums/showthread.php?t=1587273
I've built LED lights for Hydroponics Gardening, but haven't built any for my tanks yet. Will probably break down and do it pretty soon. Starting to get into planted tanks a little more.