That works if he's dumping the bowls. I have one that climbs in and displaces the water - he's about 1500 grams and does use a hide also. The problem has been alleviated - not fixed - by giving him two of the small melamine cat bowls from the dollar store for water and filling them only 1/3 full. Usually he only messes with one of them overnight, and there's not enough water in it to turn his tub into a sodden mess.