75 gallon mesh top slidding glass doors Mercury vapor bulb 160 watt ceramic heater on cool side. Temps are correct on both sides but humidity is below 20%. What can I do to get the level up to 30% and keep it stable. Thanks
You can always try putting in a humidifier for a few hours a day to see if that brings the overall
humidity up in the tank.
That is a nice sized tank & the size is always a challenge to keep the environment stable, too.
Feel free to post pictures of your setup in case we might have more ideas.