I use an infrared bulb for my cool side heat as well, so I know how frustrating it is to keep humidity up. I have most of my screen top covered with a towel, and I just mist more often and try to keep the substrate relatively damp.
You could always use smaller pieces of plexiglass to cover as much of the screen top as possible, since I can imagine cutting holes in plexiglass for your lights could be a tricky process. Or covering the top with aluminum foil (and shaping it around your lights) could work too.
Reply With Quote