Any extra tips on keeping humidity up?

Like I said I am using lamps so that's a pain but I have foil covering the screen that doesnt have the lamps (well most of it, gotta leave air holes!) and I put fresh warm water in every day and mist...

I'm thinking of using ecoturf as a substrate instead to see if that helps and buying a hygrometer for the other side of my tank (the side w/o the lamp on it because at night when that lamp is off the humidity is perfect).