I actually had a question about water heaters--I had one in with him until he was maybe 5", but he broke that one going after fish, and he's busted two more since, so I'd given up using them. I tried protecting them with rocks, but that didn't work too well because in order to get enough rocks around it to protect it, i blocked off a lot of the current...so I had a 3" circle of VERY warm water that he couldn't get to, and no circulation to mix it in...any ideas on how to stop him busting them??

And I do use a basking heat lamp