Quote Originally Posted by LGray23 View Post
Thermostats are for temperature control, not humidity. I use a DIY rack, and RBI rack, and a tank and I don't need anything other than a water dish for humidity in any of them. You tape the probe on the heat tape because you are controlling the heat tape. You control the maximum temp it gets to, if it's not in direct contact with the heat source then you aren't controlling the heat source....
So if the heat tape is 91 degrees it is also 91 degrees on the hot side inside the tub?