Hydrology9 VaporizerHydrology9 Vaporizer The Liquid Cooled Dry Herb Experience Redefine your relationship with dry herb through the Hydrology9 Vaporizer by Cloudious9. This isn't just a vaporizer; it is a masterpiece of "Space Age" engineering that bridges the gap between traditional water pipes and modern vaporization. The Hydrology9 features a built in, leak proof water filtration system that purifies and cools every hit, delivering the smoothest vapor quality ever