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This is mine hot melt glue to hold it in place. I find it works ok the RHP holds the hot spot reasonably well. I unlike some have never found more than a couple of degrees to ambient temps to the RHP. The common thing seems to be addition of a heat sync to the set up so it will heat up and than in turn warm the air. RHPs are radiant heat just like UTH they don't have much effect on ambient air temps. Especially if you don''t measure the air temp under the panel (the probe being warmed by the IR and not accurately measuring the air but rather the surface of the probe.) The easy tell is if you feel a dramatic temp change with your hand from under the panel and not under the panel it is not heating air much if it were there would be little change.
The up side is if it is not heating the air it is far safer. If it is heating the air with any efficiency and it is capable of maxing at 190º (hotter than most UTHs) it could heat the air to 180º+ and this will cause serious issues for the snake.
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