...oh, and as far as glass goes, you will be fine with glass. All my snakes are in glass and are all healthy and doing well (my Cal King just shed a few minutes ago, perfect one-piece shed). However, I do plan to switch to PVC when I can. Unfortunately, it's a money thing right now. I've never had a PVC enclosure, but based on everything I've read, they are awesome. I personally like having the display style enclosures, so a tub and rack system doesn't fit my personal needs.