Quote Originally Posted by Kaorte View Post
The lifespans are about the same for both. Maybe a little bit longer for flexwatt but its pretty negligible.

The herpstat II is the only thermostat I know of that will allow you to set two different temperatures. All of the other ones will only let you set it to one temperature. The johson and ranco will let you control 6 identical heat sources to the same temperature.

So a Ranco or Johnson would only work if I had multiple tanks & each one set to the same temp correct? For my set up, I would need each heat source set at a different temp, for the cool side UTH, the warm side UTH & then for the CHE, right? Thanks so much for your help!