What size tank is that and what type of lights are you using? I have two empty tanks, just waiting for the snow to melt to set up like this one 30 gal and one 125 gal. The local hardware stores sell flourescent fixtures relatively cheap, but also special "plant" bulbs (that aren't very bright). So I guess I am asking if I should use regular white light bulbs, the plant spectrum, or mix one of each?