Ok I'm sort of worried about what to do with the piranha's when we move. I was considering moving the tank last and just using as many empty jugs and buckets that we have to remove as much water as I can that they are used to. I was than going to just carry them over in a bucket and immediately transport them back into the tank once the tank is set up. I was figuring they'd just have to live in a half full tank for a night so the water has a chance to get to room temperature (ofcourse I do also treat my water with conditioner and stuff). Will they die? My filter does reach halfway down my tank so I would be able to plug the filter in. Any suggestions? Should I just let the water acclimate for a couple hours before filling up the other half of the tank? I don't want to shock them but I know these two don't easily shock with temperatures and such (as I never really knew the proper way to acclimate fish until I put them in their new tank. But sometimes I will clean about 50% of their water every other week (instead of 25% every week) and they don't seem to be bothered by it. Any help would be appreciated because I'm freaking out about these guys. Also they can not go into plastic bags for transport because they will bite through them. I got plastic containers from the pet store but they don't fit comfortably in them and seemed stressed (by stressed I mean aggitated and just severely p.o.ed).