Ok so heres whats happening 2 of my cichlids are sitting on the bottom breatting heavally not moving looking slittly discolor not eating. my other cichlids are swiming around very slowly and only a couple of them are eating. This is a huge turn around from an extremly actice tank. I do not see any thing wrong with the fins. I did a 25% water change added salt turned the temp to 86 and turned up the airration it is not getting better what do I do.