I have a regular 20 gallon tank not being used and want to set it up as a frag tank. I was wondering what type of lighting to use, right now I am between either the t5 or metal halide system from aquatraders.com
http://shop.aquatraders.com/Odyssea-...ce-p/52201.htm

http://shop.aquatraders.com/Odyssea-...T5-p/54241.htm

I will have sps, lps, and zoas. What would be the best flow for a tank like this?