Craziiininja Posted December 23, 2020 Share Posted December 23, 2020 I had a betta with fin rot that passed. How long should i let the tank run without fish til its safe to add new fish? Link to comment Share on other sites More sharing options...
Colu Posted December 23, 2020 Share Posted December 23, 2020 (edited) If it was bacterial you can disinfectant the tank before adding any more fish with a 3% hydrogen peroxide solution just leave your filter running it turn into H20 and oxygen after 24hrs Edited June 9 by Colu Link to comment Share on other sites More sharing options...
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