i just built my 20g sump...i know that your suppose to put some sort of light on top...does any one know what kinda lighting fixture i have to get? i want something cheap...preferable somethign i can just pick up from Home Depot...thanks
any light would do if it's just a sump. There's some bulbs at HD that are the right color spectrum. do a search for 'Lights of America' or "loa" on reefs.org, and you'll see lots of threads.
If you're planning on using it as a fuge as well, you'll WANT the algea growth. I actually use old PC bulbs over mine. Once they shift color temp they're no good for the tank, but they're great for the fuge.
hmm you think i can just use a reg flor bulb? or i have to get one tinted with actric or something? also how many watts for a 20 g tank? thanks a lot coffee