I have been thinkin about ( Lorna is going to love this) Getting another tank to keep my two Maroon Clowns in and to put my zoas and polys in, My question,what is the minimum size this tank needs to be to keep my two clowns in? they arent big now ( 2 1/2 inches) but they will grow. I am not going to get the minimum, I just want to know how big it must be. Also does this tank need to have MH lights, all I will have in the tank is my Rose Ann. and polyps and zoas.