Over the past month i have slowly introduced a shole of clowns ranging from3''to8'' in my 240g.At first there color is vibrant and after a few days they gray up so all of them are gray ,i have researched loach behaviour and i realize graying is normal but mine seam very dark. My water is good everything zero ph7.0 temp 82 all my clowns in my other tanks they are bright and playful am i missing something theirs 8 total in the 240g.