I had a betta die from dropsy in one of my tanks. I've washed the tank and soaked it with a solution of potassium permanganate. And I'll be dipping the plants in a mild permanganate solution as well. Should I do anything else to sanitize both tank and plants? I was planning to use the tank as a quarantine tank in the near future and I'm worried about the bacteria potentially surviving and infecting other fish. Any input would be much appreciated. Thanks!