Quote Originally Posted by glkherp View Post
Here is a picture of one I just finished making for someone. I have built a couple dozen of these for people with good success. I start with a Coleman 120 quart cooler attach PVC to the bottom of it and run 7 feet of three in Flexwatt crisscrossed back and forth between the PVC. For the shelf I use the metal mesh shelving usually used for linen closets. Then a Herpstat thermostat to regulate it. I have never used water bottles in the bottom of them and have thrown one out in my garage when it was 40-50 degrees and it stayed within a half degree of its set point.



George
How do you keep the humidity at almost 100% w/out any water bottles in there?