I've got a normal snapper and use the largest plastic storage tub I could find for his tank. I don't even bother with filters, they're so messy that even heavy duty filters can't keep up. Instead I do a complete water change every week. This is another good reason to use plastic instead of a glass aquarium. You'll be cleaning the tank every week and that large of a glass aquarium is very heavy. For food I use a mix of trout chow pellets and whatever dead mice and rats my snakes refuse.