Re: Need help with sick goldfish please. Lump, Scales protruding, Hemorrhaging.
The film on the air stone will just be biofilm - common in most tanks. Use 12 drops of 2000 for the extended dosage. You can use Exit at the same time as 2000, but he's not really showing symptoms of anything that would treat so it my be wise not to give him the additional stress of a second medication at this point.