Asian Water Monitor will not eat
 

I got an Asian Water Monitor from a dealer in Hamburg last month. It refuses to eat. It will not eat anything except crickets. It spends most of the day sleeping. I have never encountered this before. Any suggestions?

How do you have it set-up?
Basking temp, ambient temp, hides, tank size, etc?
Has a vet performed a health check?
Probably wild caught and has parasites.
What food items have you offered?

He was in a 280 gallon tank, but he is in one of our medical center holding racks now. The backing spot is approx 100, ambient is around 85. He has been given panacur to treat any intestinal parasites. He has been offered superworms, dubias, pinkies (live and dead), eggs.

Asian Water Monitors need a basking area of at least 125 degrees.

I cut his heat up about a half hour ago