Controlling humidity for a Milk

[sleepswthghosts]

Hey guys,

I have a 6 year old milk snake in a 50 gallon tank with a screen top that slides out. Her last tank was a wood lid with a screen section. In Calgary [where we used to live] the humidity in my apartment was the right percent for her, so I never had to do anything about it, but I've since moved to Montreal and the humidity is a lot higher, which isn't what's said to be ideal for this type of snake, as they like warmer, drier.

I've heard of partially covering the top to keep humidity in, but how do I keep it out? Or is it even necessary? She doesn't seem to mind one way or the other, but I thought i'd check in just the same.