Includes 4 Solenoids, mounting board and all hardware. After placing the nutrient stock tanks on a shelf, you would mount the solenoid board to the wall below the tanks. You would then attach the tubing (included) from the stock tanks to the top of the solenoids.

You would also attach a tube from your pH stock tank to one of the solenoids.

Then, you run tubing from the bottom of the solenoids directly to your reservoir. When the reservoir needs nutrients or pH up or down, the solenoids click open for a defined period of time, allowing the nutrients or pH adjusters to flow from the stock tanks, through the open solenoid valves, into the reservoir.

£ 199