Hello all. I'm sad to say that I think it's time for a total break down of my betta tank. I have exhausted absolutely every avenue offered to me by my research and you all here (thank you)- clean water, time, salt, good diet, medications. All parameters, nitrates included, are kept at 0ppm. Temp and pH - well, it's all in my profile. It just won't quit. I've grown desperate to see this fish live, heartbroken over watching his fins get infected repeatedly, and am ready to breakdown the tank. How do I do that with a living resident? Because his water needs to be kept warm, I cannot really leave the tank overnight to dry. Can I? I guess I could get him a 10g tub and run the heater in that with him? It's Cobalt 50W (up to 14g). I'm thinking bleach will work fine for the tank and components, and he'll be getting a totally new filter anyway, and the only thing bleach does not kill is columnaris, right? Which is unlikely to be the problem here. I also need to know about bleach dips - how to do them and if the plants I have can handle it. In his tank is water wisteria, bacopa, subwassertang, hornwort and a marimo moss ball. The only one not easily replaceable is the subwassertang. Thank you for your time.