Mine seem to do great on it, but I know everyone's experience can be different. I get good weight gains and they maintain well. I don't seem to have trouble with keeping good temps, although the bottom tubs on each rack (the ones resting right on the floor) tend to run colder. In the winter time if it's drafty in the room I'll slide an individual heat pad under a corner of the tub if it doesn't seem to be maintaining the right temps, but that's just the bottom tubs and easy to remedy.
