Hi, this isn't exactly for BP's but is generic enough I have a 40qt rubbermaid with a male rtb I'm having problems with my temps, my accurite is placed inside over the UTH, along with my T-stat probe right next to it.

T-stat is set 87-88 deg and the accurite is easily 8-10 off from this.

is this normal? which one do I "trust" the Accurite is old and has been used outside/inside alot and was wondering if its just wrong/worn out

my T-stat is this one

http://www.amazon.com/Hydrofarm-MTPR...5106504&sr=8-6

I'm leaning to believe the accurite is just plain wrong, putting my hand on the tub it barely feels WARM much less close to 100?

please help new to this

Chad