Just got done with my new turtle pen, it is 8' x 8' with pull out deviders, one side for the box turtles and the other side for the cherryhead torts(not in it yet, need to get another water pan). Their old pen was only about a third of the new pen with no dividers. The cost was only $88 and one day off hard labor due to burying the bottom third panel into the ground by choping roots etc. so they dont dig out. Next thing to do is to make a hibernation hole, but I have time for that.