If I were to clean my bathtub thoroughly, would it be okay to plug the drain, fill up the bathtub, and let my turtles swim around for some extra exercise and swimming fun? I'd be supervising them.
SURE! We got a big ole bathtub and my babies LOVE getting to swim in it when we are cleaning their tank BUT I also have a ledge so they can get out of the water of they want, So just make sure there is something they can get onto
I would throughly rinse everything with clean water after initial cleaning. Personally, I do not recommend warm tap water, for the same reasons you are not supposed to drink or cook with it.