i am setting up a 55 gal FOWLR tank and was wondering if this was enough light. I have two fluresant tubes for the lighting is this good enogh. I would also like to keep some low light poylups and mushrooms. my LFS said that I would need a better light for corals but could possably keep low lighted things with my regullar fluresant lights. My friend has a 90 gal and he has grown his own poylups on his live rock and he only has flursent lights. Any info appreciated.