I am the Director of the Oak Mountain Interpretive Center for Samford University. Our center has displays of the ecosystems found in the central portion of Alabama (USA). I purchased a Mist King starter system to hydrate an exhibit that feature tiger salamanders. It was obvious while unpacking the kit that the unit was solid and well-designed. After installing the unit, I could not get the seconds timer properly programed. I set an email to Marty at Mist King that was immediately answered, within an hour, identifying the mistake that I made programing the unit. I made the corrections and the unit works like a charm! I plan to purchase an additional unit to hydrate a very large wetland exhibit that is currently under construction at our center. The second unit will be the next size larger due to the area of this exhibit. I highly recommend this product!