We had some issues with the rat rack while building. We didn't predrill holes for the screws and so we had wood splitting issues and the legs were going off at weird angles. So now we've sawed off the legs for the most part and took the rack down to 3 tubs. We but bracers on to make it more sturdy and we are in the process of putting the runners on. Then I can go to the store and get the tubs for the rack.

So without crowding anyone, how many rats can live comfortably in a tub that is 22.25" by 16.75"? I also want to give them toys and things to chew on. And how best can I hook up waterbottles for these tubs? I can't do a watering system since I wouldn't put that kind of money into a rack with only 3 tubs.