How To Clean A Fish Tank Without Killing The Fish. Avoid frequent large water changes. Of course, if you’re a live plant shows signs of a fungi infection (white fungus) or rotting, you should definitely remove it from your fish tank.
Remove fish from your pond before cleaning it every year. Typically you should only change between 25% and 50% of the water. It’s better to learn how to get rid of white fungus in fish tanks by cleaning the entire system.
