I have seen on more than one occation people who have turtle set ups that are like fish tanks with water that is anywhere from ten to fifteen inches deep with many different shelves and rocks that are stacked up i was just wondering if this is okay for AST's i know that they like to just stick thier heads up and put their nostrils out of the water i was just thinking that this would give them more space to move around a lot seeing as how my three AST's are as active as my common razorback musk turtles? any input on the subject would be great thanks in advance.