Building an automated high pressure aeroponic system

This is a fairly low-tech automated system. It’s faster, cheaper, and less complicated to build but on the other hand requires more manual intervention and may produce more inconsistent results compared to systems that monitor sensors and change inputs.

Design inspired by:

How It Works

  1. The reservoir contains the nutrient solution. Must be manually tested and monitored for pH and PPM.
  2. The filter prevents debris from damaging the pump.
  3. The check valve enables pressure to be built up in the system between this point and any solenoid valves down the line.
  4. The pump pressurizes the line.
  5. The accumulator tank helps prevent pressure drops when multiple solenoid valves are open. In this drawing there is only one grow container but multiple containers can be added.
  6. The pressure shutoff switch turns off the pump when a desired pressure (80 PSI in this case) is reached. The pump and the pressure shutoff switch are constantly energized.
  7. The drain enables maintenance to be performed by allowing the line to be manually depressurized.
  8. The solenoid valve opens the line to the grow container. This is controlled by the timer.
  9. The timer sets a schedule for the solenoid valve to turn on and off. For example, 10 seconds on and 3 minutes off. The solenoid valve is closed by default and opened when energized.
  10. The grow container houses the plants and the misting heads.
  11. If excess nutrient solution builds up in the bottom of the container, there’s a gravity drain back to the reservoir.

Parts List

The Greenhouse ($218)

Garden Supplies (~$75)

The Platform (~$30)

  • Wood Screws
  • Concrete Blocks (go to hardware store)
  • Plywood (go to hardware store)
  • 2x4 lumber (go to hardware store)

The Containers (~$200 w/o tools)

† tools, skip if unnecessary

The Plumbing (~$320)