good to know. seeing my tank is 72" do I go for 2 x 36" fixtures 3 x 24"? MUCH cheaper to avoid the 2 foots. also 6 vs 8 bulb systems, is there really a difference?
I had a total of 8 on my 220 and I could grow just about anything on the sand. 8 was to many but provided better color. I ran 6 1 coral plus 1 purple plus 4 blue plus
