Son getting ball python. Cage setup help please

[BuckeyeBalls]

What I do is slide the UTH under the tank without adhering it to the tank. So basically the waxpaper or sticky side is on whatever the tank is sitting on(piece of wood, dresser, etc.). There is usually a little gap there between the surface of the tank and the bottom once this is done and I just put the probe there rather then in the tank. The snake will most deffinitely move it, and tape is a bad idea as well so don't do that. It works for me perfectly. Put the probe on the surface of the tank to make sure the thermostat is where it should. The gap might make a little difference.

Why would tape be a bad idea. And also the UTH is already stuck on there came with the tank. Its a small one like rated for 10-20 gallons. stuck on a 29 gallon one lol

But i will be buying a newer one in maybe two weeks something a little bit bigger to cover more of the bottom of the cage which i will get the next size up and will do that.

I think if i ordered the ReptiTemp 500R i could have it the beginning of next week, do you think the setup and temps now would last until monday when it would arrive or just go buy the one at petco