Unfortunately my betta died. Not sure what else I could have done to save him but not much I can do now. What do I need to do to clean my tank? Does it even need cleaning, so to speak? I'm not 100% sure what he died of, it may have been fin rot, or a bacterial infection, or fungus, but I want to make sure that if I want to put another fish in that they won't get infected, and that the shrimp and snails that are currently in there will be fine, especially as the shrimp were eating the dead fish. I was on the third day of treating with Pimafix. Should I keep treating the tank? Or do I just need to do a large water change?

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[X-posted to /r/Aquariums]