"Bill Stock" wrote

There are 3 GF, one 8", one 6" and one 3+". I used to have two small
ones, but he died of dropsy a few weeks ago. I have no gravel and they get
bathed every week (50% water change). Giving them the plant has caused a
Columnaris outbreak, likely due to some sort of parasite. They're on
Kanamycin now and doing better. Potassium Permanganate (I've got a
lifetime supply) has been suggested, but it always kills the biofilter.

Question, how big is the tank? I'm sure you have lots of filteration going
on but if your tank is at pretty close to max capacity, probems like this
erupt over and over. I'm not suggesting you kill any of the fish if
overloaded, just checking options here.

I've heard the suggestion of 10g per inch of goldfish for perfect health and
based on anticipated growth, that would mean a 200g tank (rediculous, I
agree). I hope though you have something like a 70g going there?