Thank you! And thanks for the reply! Yeah it was pretty much since I got him. He's never been lethargic and hasn't lost any weight, I give him two crickets every second night so he doesn't put on heaps of weight (the crickets are fed carrot, broccoli, lettuce and potato for moisture all dusted with GutLoad) and has no/has never had cuts on his skin at all. At most he'll only have these stone for 2 more weeks until I buy him his new tank with smooth stones instead.