The solution if you are using a tank!

[Rickys_Reptiles]

Have you done this or is it an idea? I'd be worried about the plastic getting bumped and contacting the housing of the heat bulb and melting.

It is something I did ages ago when I used tanks. Your concerns are valid; this isn't an idiot proof solution. It's safer than a towel though, as PVC/X is much more heat resistant than cotton