My friend gave me tank that used to have their betta in it. It's a small glass tank with a removable top that I've seen people keep baby frogs in before. I wanted to use it for my grey tree froglet but I have a few concerns. Apparently the fish passed away in the tank, can I fully sanitize despite this? I have already soaked the tank in diluted bleach once, planning to do it a few more times if it is not harmful. Is there anything else I should do? Suggestions appreciated

I have something called "Wipe Out" terrarium cleaner by Zoo med, would this be safe for use with frogs?