My king betta, oneday, is about 2.5-3 inches long. About a week ago (i know i procrastinated this) I noticed he was floating to the top. buoyancy was a slight problem. i fasted him and it seemed to get slightly better. Now? It seems like he’s not getting better. He may be getting worse. I medicated him for his fin rot, but I didn’t see BIG improvements. (I treated him with Maracyn 1.) I hope you get the picture. I hope he recovers. please help me! I still have Maracyn 1 and I also purchased aquarium salt. I have a 2.5 UNCYCLED hospital tank! It has a sponge filter and a fizz airstone. The temp will be staying at like 76-78 degrees f.