Temp Question

Its a digital. :) And awesome, I'll get that Friday

So the hot side with the probe goes between the substrate and the UTH, correct?

Correct! :gj:

Walmart doesn't list it on the site but they do have it. $12 and it does it all.

EDIT: Almost forgot, since you have already have some stuff you could look for these Coralife digi therms with a probe I saw last time I was at petco. They were on sale for $7 I think. Use the combo you already have on the cool side of the tank to do ambient and humidity, then this one on the warm side substrate.