So when I got my panda corys about a month ago there were 4 decent sized and 2 smaller ones. I just noticed that one of the small ones looks like he might have been bullied a little. He’s lethargic and his tail has a small tear. Im thinking about setting up a “hospital” tank that I could make sure he’s getting enough to eat and put some aquarium salt in it. Since corys are social, should I bring over the other small one with him (perfectly fine, not getting bullied) or should he be by himself? Another idea, should I put him in a breeder box in the aquarium to see if some rest and food will help him?
Also if I do need to set up a hospital tank, I don’t have an extra sponge filter, can I get away with just putting an air stone in the separate tank?