When the medium got dry again, the roots starts to look for water and that's the time to turn the autopot on. The Autopot System is a gravity fed watering system which requires no power, pumps or timers to operate. I am using the easy2grow model and a flexitank as a reservoir.
I filled the reservoir with 4 gallons of water:
- 0,2 mS/cm - Calimagic
- 0,4 mS/cm - BioGrow
- ph - 5.8
Keeping an eye on the reservoir ph during the week.