I have a 10 gal tank with a 75 watt red lens bulb and a 8w UTH both regulated by a thermostat. Temp on the hot spot is 90 and the cool side is 80. Humidity, however, is dwindling into the 30s and 20s, which is WAY too low (glass cage in a currently cool climate).

I am thinking of just soaking a sponge with water and setting it in there to help with the humidity. Is this a good idea?