Thanks for the replies. I did just get him from the breeder on 2/13/2016 so possibly just acclimating. I am running the accurite temp gauge on the cool side with the probe underneath the substrate on top of UTH. tstat for the UTH is set to 85 and 50w inferred red bulb comes on and off for 30 mins on and 45 mins off. Light is used as it is a 20L glass and helps boost ambient temp from 80 to 90. While temps are taken in the hides and surface with IR temp gun. I'm pretty confident he's just getting used to the new space. His feeding days with the breeder where Wednesdays so I will try again then. And yes I do weigh him every Monday night and he's still little ole 75g.