Yes, I have to as there is no other way. It will only be for 3 weeks and I know there will not be as much room but I am not going to tear down my 10 gallon, haul it home and put it back up. We don't have room at my house right now. I plan on doing water changes every day and they will have their heater and air stone. Basically my fish are limited to one desk in the kitchen, which already has a 10 gallon turtle tank on it. I have Leo in his 1 gallon critter keeper, Toby in his 1.5 gallon cube and, yes, the cories will be in a 3 gallon. I cannot keep them here at school. I wish I could, it would SO much easier but they are not allowing any aquariums to run over the holiday. I've asked over and over but those are the rules. I don't mean to make you mad, Choclate, and I wish I had some other way to keep them in a larger space but for now that is all I can do. I still have 2 more weeks so if I can find another way, I will. But that is the plan for now.