I have read OFL's sticky about recommended water changes for a 2.5 gallon tank. However, I was wondering if I could change the water more often. Would it be alright if every other day I changed 50% of the water? Would this be considered too clean? When I was doing the 1-50% and 1-100% weekly water changes, Prince Chulalongkorn got fin rot. I've currently switched him to a quarantine tank dosed with aquarium salt with 100% water changes a day. Once he gets better, he can go back in his newly divided and cycled 10 gallon. But, I recently got an elephant ear betta named Okami. He's in the 2.5 gallon tank, and I would hate it if he came down with fin rot or something similar.