Great question. I come in the back wall of the PVC enclosures and hang it down about 3/4 of the way. This has made my entire Hotside (once regulated for 12-24 hours) within 2 degrees of what my Herpstats are set to (91).
All my enclosures are 2’ high, if you have a small PVC enclosure thats 1’ high you may have to keep your Tstat a lot lower to reach the desired ground temp you want.
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