I have been adding some new Cardinals and neon tetras to my tank, and have been quarantining them in of course a QT tank. My Question is my last group had a very bright light a 14" t5 over them as this was my light I used to use when my QT tank was my actual tank. That group did fine except for one who died, for my new batch I put the original hood over it, but it seems very dim, in comparison, but the fish are more active. Is the dim light better, or could it be too dim?
Five Cardinals, six neon, five gallon QT, (slightly over stocked, but well managed and watched)