I am going to quarantine my betta in a filtered/heated small 1.5 gallon tank for fin rot. I do not have clean water in my main 5 gallon tank as it has not finished cycling and has ammonia. I still have a mystery snail in the tank and will be using tetra safe start plus to try to hurry up and cycle the 5 gallon tank while my betta is in quarantine. Since I do not have clean water I can’t just do water changes to cure the fin rot, so that’s why I will be quarantining with medication or aquarium salt. I don’t know which one to use. I need you guys to tell me if fin rot is severe or moderate and I if I should use aquarium salt or medication. These are before and after pics so you can decide.