water bowls are okay when they are babies until they are about 3-4 inches but after that water features are unnecessary. i have many posts about this subject. water features are bacteria factories. it is totally up to you but they dont need standing water in there home cages.. they still need to soak though. feed them in a different cage (i use a glass 10 gallon) then after they eat add luk warm declorinated water to that feeding cage.. they will go to the bathroom so you will need to clean the cage then re add luk warm declorinated water and let them soak for 30 mins - 2 hours. they start getting resless when they are sick of soaking. take them out and put them back into the home cage. the home cage stays super clean and they WILL NOT poo or pee in the home cage ever again. this is what they do in nature. they have a few spots they love to sit and a water hole they poo and pee in. but they never just sit in water unless its breeding season.