Mine loves to sleep in the water at night (so a water heater helps). And yes they love the branches mine loved his hamock until the suction cups wouldnt hold his wight anymore. For an adult i'm looking to get a pool thats maybe 2 feet deep, even at this age he wants to dive alot so i figured might as well give him a deeper pool. Still designing the adult cage (I'm only planning on one but you never know what might pop up). Might go the water trouf way to make things easier.