I use a few UTH's under the tank, and the plaster conducts heat beautifully (I use plaster disks to conduct heat evenly in ovens when I bake clays - I'm a sculptor) Plaster is known for it's ability to conduct and diffuse heat well, so it's actually better than just sticking the UTH on a glass bottomed tank.

I bought the fake cacti at a garden center years ago for a couple of bucks each. They came in little pots. I think you can find them at places like Walmart and other "everything" stores.

Glad you like it!

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