I just got 5 rbp's that are about 1.5 inches long in a 55g tank. Most of the p's have tail and fin nips from being in the pet shop. I have plenty of guppies and a large feeder comet in the 55 with them now. I was wondering if Melafix Tail and Fin regrowth product was ok to use in my tank. I have heard nothing but good things before and it states it is even safe with invertabrates and snails, also states it will not harm the biological filter. Can I use this stuff. I want my p's to be as healthy as possible. Thanx.