I've got my johnsons temp probe taped to the bottom of the tub. Set at oh say 92 for example. The acurite thermometer will read anywhere from 90 to 94! Now I know there's a swing like that with on off thermostats.

My 2 helix's are the bomb. But yes I am still using the johnson on one of the sides of one of my tubs. My question is.

How can the temps inside the tub read higher than what the thermostat is set at? I'm always having to fiddle with it. Currently set at 92. And is reading 94 inside the tub???? What gives???

2 more helix's will soon be on the way.