I recently purchased a 6 month old BRB and I am trying to maintain humidity levels. I have read that covering half of the lid will hold in the humidity. My problem is that I have two heat lamps, one is an inferred lamp on the left side and a basking light on the right, the only space to cover is in the middle. Can I put a piece of plexiglass on one of the sides with a lamp on top of it? Common sense says it will probably melt, but are there any better solutions?