The Hydrology 9 is a dry herb / cannabis vaporizer with built-in water filtration. It’s a simple device with the oven on the bottom and a borosilicate glass mouthpiece on the top.

There’s nothing fancy about the heating technology. It’s a basic conduction heater with a built-in stir tool. The oven holds about .2g of ground cannabis.

The built-in bubbler filters out a significant amount of organic material and flavor from the vapor. At the lowest temperature, the vapor is light, smooth, and mostly flavorless.

For a portable weed vape, it does a great job of filtration and vapor cooling. For me – it does TOO GOOD of a job. I want to taste my weed.

The maintenance of the Hydrology 9 is also a pain in the ass. After 3 or 4 bowls the water needs to be changed. After 9 or 10 bowls you’ll need to take the whole thing apart and really give the device a detailed cleaning. There are tiny holes that need picking and brushing. The device includes tools that make this job easier, but expect to spend 20+ minutes cleaning it every other week.