My tank has been cloudy ever since I treated it for fin rot, and I have slowly been doing water changes to try to make it clearer. The fish that I was treating seemed to get better for a little while, but is now doing worse again. He is having trouble swimming, he tries to swim to the top for food, but just falls to the bottom, staying whereever he falls to even if it's just caught up in a plant (plastic) in the middle of the tank. What is the most likely cause of this? I just did a tank change yesterday, but I'll do one again tommorow to try to get the tank more clear and easier to deal with him.
Also, if this molly dies, I will be left with only one 6 month old molly fry. She is the offspring of two black mollies, but she has black spots and is not fully black (yet? won't be ever?). I clearly can't have her alone in my 10 gallon tank. Is it best to get more black mollies only? Could I add a diff kind of molly and it will be equally prleasurable company?
of course, disease prevention comes first. what am i doing wrong?
i feed them tropical flakes that the fish store recommened with extra algae wafers in them. it's a 10 gallon freshwater tank, little bit of salt. temp 78, pH 8, ammonia 0ish