So in an earlier thread of mine I evacuated my zebras from the 32g to the 10g QT that was in the middle of cycling, preparing for new fish on my list. One of the Danios is a killer and I can't tell which one so the 3 of them are in prison. However, this is supposed to be my QT tank. It's not done cycling which isn't great for them and way more work for me. Worse, either one of them is bloated or pregnant . Like..? They're pretty happy in there, no signs of stress. I'm amazed. But now what? I need that tank for new fish. Could I temporarily move the Danios back to the 32 when I bring home new fish? Then back to prison afterwards? This way they keep the tank cycled in between purchases. If I wait a couple months in between just in case there's something in that tank from the new fish? Yes I guess that means the Danios are getting moved around but I plan on doing it in 2 phases - first a school of cories, move Danios for 4 weeks - maybe not enough time for killer to get aggressive - move them back, wait 2 months then get the harlequins, repeat. OR can I get 5 cories and 8 Harlequins at the same time? That's alot in a 10g for 4 weeks is it not? But that's one back an forth move. Thoughts?