You probably have enough aeration with the ac50, but I always run a aerator whenever I'm medicating a sick fish. The extra O2 seems to perk them up. Then again I run the aerator in my main tank because I like the effect.
My last set of 4 goldfish I picked up from the pet store all had the long stringy thing for a few days. After medicating and feeding them pelletized food for a few days they perked right up. I think it might be in part because they feed the cheapest quality of food at the pet stores if they feed them at all.
My last set of 4 goldfish I picked up from the pet store all had the long stringy thing for a few days. After medicating and feeding them pelletized food for a few days they perked right up. I think it might be in part because they feed the cheapest quality of food at the pet stores if they feed them at all.