BP baby is overly active?

[Coluber42]

Have you used a RHP in a tub?

I haven't, but I used to know some people who did. I should also say, they used it in a relatively high tub where it sat well over a foot above the floor - it wasn't sitting six inches overhead. They put a piece of plywood on top of the lid and screwed the panel through the lid into the plywood. I don't remember what kind of tub it was, but it was one with a reasonably flat lid.

I have used it myself only in a tank and in PVC. But for what it's worth, those plastic tubs are typically made of low-density polyethylene, which has a melting point well above 200° F. The benefit of a RHP is that it does not get anywhere near that hot. If you're concerned, you can always use another piece of material such as PVC sheet on the inside of the lid as well to space the panel out from the lid itself.