Gravity Fed Low pressure Systems? 

No Problem!

Do you garden at a location where there is very low water pressure (less than 10 PSI)? Is your water source a tank that is 20 feet or less above the surface of your garden? Do you collect rain water off your roof and store it?
Then DripWorks has several products that can help you put together an effective gravity-fed toolkit.

Irrigation in a High Tunnel

Depending on what you are growing in your high tunnel, there are a good number of ways to effectively supply the right amount of water to your plants.