Thermostat Suggestions

how about Vivarium thermostats???

I have heard the vivariums are ok. There are plenty of people here that use them. I don't believe they have all the safety features like the herpstat. Imo, herpstat is #1, vivarium #2, with the hydrofarm at #3 and should only be for temporary as far as I am concerned. I don't have much knowledge on the helix that was mentioned. Except that the only other 2 times I remember hearing it's name here, involved 2 near fires.