URGENT white spot/fin rot/fin cramp!
Hey guys recently all my fish have became very ill, first one got the disease and couldn't even swim, so we put him in a separate container, then we got he almost brand spanking new so we put him in with the other fish, but now they are all starting to get white spots/fungi and the comets fins are cramping! Also their fins look like their rotting and getting torn. We have treated them many times with medicine but it's not doing anythin, I have a black Moore two comets, a weather loach and a plain ordinary goldfish. The normal goldfish and weather loach look fine. Does anyone know if their is anything else I can do. I will try to look for expensive medicine as I got mine from a garden centre ( my bad ) they are in a nearly 200 litre tank and I have had them a good 4-5 years! Someone please help me I don't want them to die!