Thanks!

I'll try to take a better picture of the magnets and how they work tonight. They basically hold the door in place. The magnets aren't so strong that they'll break the glass, but they're strong enough to hold it in place through both pieces of glass and they let go easily if you go to take the door off.

I was originally planning on going through Protean terrariums but I decided that I didn't like a couple of things about the sliding door design. 1: I don't like the plastic border around the doors that are needed to make it frog proof, 2: I don't like that you can only have access to half of the viv at a time, and 3: I don't like that you have to make such a ruckus to open the viv, which disturbs the frogs.

I wanted something that was as seamless as possible. I can't take credit for the design though, Tropical Ecos use magnets for their doors as well, but they don't ship so they weren't an option for me.