So it may be back

I just noticed it then, a read mark on Sunshine's left ventral fin, where it originally started. It is very very faint, I'm surprised I noticed it, it is just a faint red line.
I believe this is a disease that seems to pop up in the heat as that is how it originally started and yesterday the tank was at about 28/29 degrees celsius. I must take more action in cooling it down as obviously my fishies don't like it warm. Clementine also has a rip in her dorsal fin
I may post photos later just for you guys to have a look. I'm going to do a water change and treat with some aquarium salt and pimafix. Do you think that is a good idea or should I leave the treatment or treat with something else? I really don't want to treat with the tetracycline again, it is not a fun medication and I'll only resort to it again if it gets bad.
To think I was going to move Clementine today or tomorrow

She needs to get out of that tank!