I have a RES that I have had for about a year now.
However, I am always wondering if I should put more water in the tank. I am paranoid and I keep thinking that if I fill it up too high, he won't be able to breathe. He commonly sits at the bottom of his tank and stretches his neck very long so that his nose is just about the water and just hangs out there.
How deep should his water be? He is a pretty active turtle (climbs through his plants a lot and dives off rocks etc) but doesn't really swim much.




