We have a 55 gallon cichlid tank. We have 11 cichlids assorted (dont ask species as we are not 100% sure on each but it is a mix and they are from LFS), 14 fry in a hospital, and 1 common pleco. There is 2 15w t8 aqua-glo lights. Running a Fluval 304 and a 204 filter. Sand substrate and some...