Is plexiglass a good cover for the top of the cage to keep humidity in? If I do use a sheet to cover the top should I use one that has some holes in it for air flow or just leave some of the screen uncovered. So basically is this be a good solution to keeping humidity high while keeping airflow good.
Note: on one of my cages has a little area of screen on one of the sides as well. Should this be covered up if I use plexiglass