it's not a tick. this is one of the big white ventral scales. the whole thing.
I think he def has a shed on the way. he has darkened up alot, and when I got him out of the tank real quick this morning his belly had darkened up.
I also think not being use to any thing in the tank with him, he has banged him self up a little. I know Ive seen him move the log in there then knock it over on him self.