RHP + screen-top terrarium?

[ToxicFrog]

I would remove the screen top and fabricate either a PVC or melamine top to replace it, and then attach the RHP to that. Otherwise you'll have problems retaining humidity in it.

Humidity has not so far been a problem. We cover the half of the tank that doesn't have the CHE on it and mist as needed, and it stays around 50-60%. If we can replace the CHE with an RHP, an 80W one would cover the other half of the tank pretty well, too, hence my original question: can I safely mount an RHP on top of a screen?

Based on the description I think we should be able to just put spacers around the corners without issue; it might even be ok directly resting on the screen, but I'd rather not chance that. And then once we get a proper terrarium we can transfer the RHP into it. But I'd like to know rather than guessing, and I figure someone here has to have tried it, right?