As almost all of you probably know, people with glass tanks have always had humidity problems, and covering a side with foil or a towel just ain't cutting it. Does anyone know of any pre-made solution made for 20 gallon glass terrariums (Zoo med)? Maybe a plexiglass cover with air holes that you can buy somewhere online? If not, do you know of any home made solutions that are easy to make?

Thanks,
HenryTheSnake