ok so i know just a little about hydro but thats where i want to go for growing. anyways, i am just having a haed time understanding how the water gets to the halo.

now i know u have an dual air pump that pumps down to the bubbler, but how does the water get to the halo for the drip system? does pressure build up in the bottom and push water to the top or what? im confused on how that works thank you very much in advance