This is so smart since I only have 2 fish now, I Really like the way your method sounds.It’s been a while, so you may be right about the TT-method being used primarily to stay one step head of Ich; however, again, if you are willing to do frequent water changes, a couple of small 2 gallon fishbowls might mean less cost in medications in addition to the flexibility of ‘breaking down’ the quarantine/hospital tanks when you are done. Take them over to the sink and pour them out, and your done. I’m thinking with one small fish in there at a time, you should be able to get 2-4 good days at a time without a need to change the water due to ammonia build-up; hence the alert badge as a reminder.