Think paddy is trying to shed. Not seen his eyes go blue but has gone a bit dull and is rubbing his head on everthing in his rub. Not really got anything rough in the viv so got a piece of sand stone from the garden. Boiled in a pan for half an hour let it dry out then put it in the viv. Just wondering if sandstone is ok to put in with a corn? Seen the list of toxic plants just want to make sure that sand stone is ok. Ta Terry.