I didn't put mine under the tank, I actually stuck it to the side, about an inch above the bottom. Heats up the side very nicely, and works great for me since my ball was always sitting right on the heater. I also use an overhead light and the two combined on one side of my (rather large) tank make for a pretty close to perfect heat gradient. At night I just flip off the overhead heater.

That may or may not work for your burrowing snake, although I don't see why it wouldn't - out in the wild, their heat wouldn't be coming from below, it'd be coming from above.

~jenny
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1.1 normal ball pythons (Cindy and Darwin)
1.0 rex rat (Scurvy)
0.1 bunny (Spazz)
2.1 betta fishes (Vicious, Killer, and Butters)
3.1 great danes (Shasta, Odysseus, Merlot, and Watson)
1.0 fat fuzzy mutt (Smokey)
1.1 cats (Thidwick and Turtle)
2.0 horses (Buddy and Sam)
1.0 goat (Billy Jack)
2.25 chickens (Jacques the rooster and his harem)

but what I really want is more ball pythons!

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