Hi! I've had my ball python for several weeks, and the humidity in the cage used to be fine. Recently, it's been staying in the forties and I can't get it up to fifty. I have cypress mulch substrate with a UTH and a 50 watt red bulb. I cover part of the screen top on my terrarium with a cloth, and I have a small room humidifier near the cage which doesn't seem to help much. Can anyone help or give advice to raise the humidity?