So, I should mention I've used grow tents for their intended purpose in the past so I do have an idea of the durability of them. Also, I plan on reinforcing the walls with bamboo which I've seen other people do and it seems to work out well for them. I'd think it would be easy enough to find a way to lock the zippers and since all grow tents I've seen are designed to withstand pretty sizeable water spills without leaking I don't see that being an issue (I never had that issue using them with plants). As far as the snake managing to fold up the tent, these tents aren't that type of "fold up" tent, it needs to be disassembled pretty deliberately and I don't see a snake managing to push in the metal locking pins on the bars to slide them apart... As far as other tank options go, even a 180 gallon glass tank would be a bit small for what I have in mind and I live in southern california so I'm having enough trouble keeping the humidity up. A 3 x 6 x 3 plastic enclosure is prohibitively expensive to buy / ship and a DIY wooden enclosure that size probably would be a nightmare to move around, I'd prefer to be able to move the tank by myself if I could.