Okay, heat mat absent. Just place a thermometer within the tent, but realized I don't currently have a way to measure water temp so I am going to really have to decide on a little something up. I went with distilled to ideally have much less clogging over the nozzles. https://thcagoodhealthbenefits45555.blogpixi.com/33976271/the-smart-trick-of-artisan-hemp-flowers-that-no-one-is-discussing