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?
Do you have any of the screen lid covered? You can cover 3/4 of the lid with aluminum foil, plexiglass, etc., to help hold in humidity, and additionally use the sponge idea or a humid hide.