So if antibiotics can cause problems for an already sick fish, then do the benefits outweigh the risks of using antibiotics? I have noticed her swimming around more, which is good, but I was not expecting her fins to look worse. I am thinking that her swimming into the sides of the tank is causing her fins to become injured which is probably the white I am seeing on her whole fin when she swims away from me.It can and a week should see some results. The abx can cause probs for a already sick fish.










