"A proportional thermostat paired with an infrared or blacklight heat lamp is what I would use. A proportional thermostat will act like an automated dimmer and an infrared/blacklight heat lamp will produce light that doesn't bother a snake like a bright white lamp would."
This is the exact advice I got from Aaron for my son's setup. I have to say it's been PERFECT for our situation. The Herpstat II coupled with a UTH and an infrared bulb. Aaron suggested a 75W bulb as it has more power range and will seldom run at max output.
Since taking this advice I've never had any issues with temps other than room temps making the stat work a little harder which is the whole purpose anyhow.
Also note that if you have a thermostat failure the Herpstats fail in the off position so you'd end up with lower temps instead of all heat sources blasting at full power as some stats fail in the on position.
The changing light is not very noticeable the the dimming mode and if room temps are steady, you'll hardly notice.
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