The gravity-operated float valve at the heart of the AutoPot system that controls water delivery to the pot base, opening only when the tray is dry and closing once refilled.
Implicitly referenced throughout the AutoPot discussion. The system is designed so all watering happens from the bottom up once the valve is active. Dakota noted AutoPot recommends waiting 10–14 days after transplant before turning the water system on.
Discussed in: Ep 001