It's always a good idea to have a spare tank you can set up in case of and emergency. What you're doing seems to be working so stick with it. If can get another tank and we need to treat differently it would be a big help.
A Rubbermaid tote 20 L also works great ive noticed. Ive treated my Cuban in one of those for 4 days and he came out looking as handsome as he did before !