I purchased my betta, sulu, at petco a little while ago and have now been treating him for fin and tail rot for about 3 weeks. He was labeled as a female and was not in very good condition. For the time he has been with me he has been living in a one gallon tank with daily 100% water changes to help heal him. For the first seven or so days I used aquarium salt. I also have a 10 gallon tank that I have been cycling in order for Sulu to have a bigger and better home. It is almost finished cycling (yay!). Ideally, I would like to have him live with a school of Tetras, and I would add him to the tank last. My concern is that the move will be stressful for him, Should I wait until he is fully healed from the fin rot or should I move him in once the rest of the inhabitants are added and simply clean the tank regularly? There are live plants and more hiding places, so I think that will be a better environment for him, but I'm just not sure.
Here's are some pictures of him. He's been recovering and regrowing but he still looks to be in rough shape and his fins are quite red.