Lampropeltis mexicana thayeri Rescue

The skin around his eye is gone now, its a 20 gallon long and its on a dimmer switch I made until I can get a thermostat. Is a 20l the largest I need for this snake or will he need a bigger one? Should I still offer food every week? If so should I feed adult mice or try the two small hoppers like recommended on the caresheet? Here is a couple pictures I promised.

http://i24.photobucket.com/albums/c3...per/snake1.jpg

http://i24.photobucket.com/albums/c3...per/snake2.jpg

http://i24.photobucket.com/albums/c3...per/snake3.jpg

Your tank is fine.

I'd stick with mice.

He looks good.

good news is he is eating now but he doesnt have the best instincts, he tried to swallow the mouse without killing it so this week I got a f/t which he ate again without constricting so looks like its f/t from mnow on. Any ides if this snake is to old to sex?