I have a 20 gallon tank and I'm having to use a CHE to keep the temps up to par. The top is covered approx. 70% with a towel. I mist it in the morning because the humidity is down to 45, and I get it up to 55. Then at lunch its dropped back down again. I'm having to mist it 4 times a day to keep humidity up. Is there any tips that will help keep the humidty up without soaking the bedding? I'm using a coconut husk based bedding right now and I thought it would hold moisture. Would putting a wet washcloth in the tank help keep humidity up? I have a fairly large water bowl directly under the che.