Madkins007 said:There are a few problems with heat rocks...
1. They do not generally warm much space- just the rock itself, stuff very close, and a column above it sort of.
2. It does not take much heat to harm a reptile that is sitting there for extended periods. Trying to find the magic point where you get heat without harm is very tricky.
3. Tortoises do not generally bask on rocks the way lizards and snakes do.
On the other hand, the benefits of the hot rock are... Hmmm... Can't really think of any offhand.