I just bought a Zilla 20-gallon long and am working on escape-proofing it in anticipation of getting a baby corn (in two weeks, if all goes well!). If you're not familiar with these tanks, they have a sliding lid so all but the front edge is held down securely; the front edge does lift up, however. I'm planning on getting clips soon, but I was wondering if anyone has recommendations for the brand, or if they all pretty much work. I'm also interested in knowing exactly how strong I should expect a corn snake to be, both as a baby and as an adult; are they stronger than my fingers when I test the give of the lid, or if I can't pull it up will they not be able to push it?