I have 1 yo-yo and 1 clown which i suspect might be in the early stages of developing skinny disease. I have Flubenol, so I thought I would have a go at medicating. My question is: should I put the 2 loaches in a quarantine tank or should I simply medicate the whole tank? Flubenol isn`t harmful in any way and cathing the yo-yo is going to be nearly impossible

So what do you think? Quarantine-tank or not?
Kind regards
Marius Podolski