Hi, im new from iceland

There is a ban here for all snakes. but im a little rascal and got me one from Uk a checkered garter snake hes 4 mounths old 35 cm and dont know the weight.

He looks healthy and fine. I have him in a 20 inches * 20 inches * 45 inches tank . its an old cabinet with plexi glass doors . i made my background self out of sika boom uritan and waterpaint and epoxy paint sealant. look really realistic.
any ways i was wondering if its a good diet if i feed him . salmon and pinkies and gubbies , do i need to feed him worms ? cuz they are very hard to get here in iceland.

and what is the right hygro level ? and temp. on the cool and hot shight ?

should i have a heat mat or heat light ?

sry for my bad english