My male Crowntail,Betta has fin rot. I recently bought a five gallon divided tank, and another betta to go in the tank. This is when he developed the fin rot. I have the MelaFix Fin Tail Rot Infection Treatment, but how do I treat him with another betta in the tank that is just fine?
Backround Info:
Each fish gets 2.5 gallons
Had the Crowntail for Three Years
Have had the newer one for three months