WORRIED ABOUT DEREK

Derek has been getting more and more sluggish, just going into his bed.  

Looked on tortoise sites and forums for advice and most all have said he's not warm enough. Checked out his lighting and distance from his basking rocks and it is at the correct temperature for him. 

A trip to the vet suggested that the UV has run out of his UV light (the long one in the picture) as they only last 6 months or so, so replace that and that with calcium powder sprinkled on his food and warm baths to hydrate him should perk him up.

Only problem is I can't get him to eat.