Originally Posted by jobrien9
I've used acrylic or even plastic wrap to increase humidity in vivariums. Just make sure that whatever lighting you have an top of the vivarium isn't hot enough to melt whatever you use to increase humidity.
I was wondering if some thin sheets of acrylic might work. I'm using a freshwater LED, so it doesn't get very hot and it's suspended a little bit off of the top. I'm probably going to just grow things for a bit, so I do have some time to experiment.