Epsom salts can be purchased at any drug store or grocery store, just be sure to buy the plain or unscented version.

not floating and normal but has very jagged fins...Salt is 1 tsp per gallon
Epsom salt is 1 tbsp per 5g.
The bag of epsom is fine.
If you got the abx. Can add now and check ur water numbers daily. Keep in the new tank/qt tank.
Is the end still floating? Is it worse?
Post pics when able.
so the ripped area on your koloton's body was aggression and not fin rot? also mine seemed to develop fin rot so what medication/ methods should I use?Sorry that the polys was beat up but i think it will heal up on its own. I would follow what the other members suggested though mainly the epsom salt.
Have you tested the water if so what are the parameters ?
I recently had the same thing happen to my koloton a few days ago. Increased water changes and reduced feedings to keep the water pristine.View attachment 1261102 View attachment 1261104