I have a 34G. (30X22X12) tall tank. Now I have 17 fish in it (6 red platys,6 sunset wag platys,4 gold dust mollies,1 male betta) The fish are about an inch long right now but I think they could grow up to 2-2.5 inches. Is this close to the maximum fish a 34g. should hold? I was thinking about a...