sterilization

Over the summer, I had a betta who fell ill and passed away from an ich outbreak and possibly another illness that I wasn't able to identify. I removed him from the tank the morning he passed, but didn't have time to dump the water and clean the tank and decor since I was leaving for vacation...

Hi. I had to euthanize my Asta due to suffering from presumed Mycobacteria infection. I'm pretty broken up about it. Now to the question of sanitization. I'm aware of how difficult it is to kill Mycobacteria. Not only does it sporelate, it has a waxy cell wall. I have googled ways to sterilize...