Why isn't it good, I don't understand what you mean. Is it not enough intense, or you dont like the spectrum color? Please explain. Hor many watts is the light you have know?
that was on a 29gal tank. i have went to a 50gal show. the light has 65watt lights and i have the 20watt light that came with the tank in the back to give me a little more. its ok i guess for my mushrooms and polyps, but i want more