Here I am again a few weeks later and I will say that those rheostats are junk. I bought a few and spent so much time fussing with them trying to get the temps right it drove me crazy. I then got a Herpstat (Spyder Robotics) and in less than a minute the temps were exactly where I wanted them and haven't budged since.
The reason I got a herpstat is that I asked about 15 different breeders what they preferred (including some of the big boys like Brian at BHB) and they all said that Helix and Herpstat are the best, but many of them said Herpstat's customer service was much, much better. That sold me.
I LOVE that Herpstat. So much that I even emailed the gentleman who makes them and complimented him on how well they are engineered.







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