AutoPot 4Pot Pro SystemGetting Established. 4Pot Pro includes four, tailor made propagation lids. These are to be fitted to the pots for the early weeks whilst plants establish in the system. The lids help to generate the humidity that young plants crave. Essential Humidity. Humidity is an essential part of the micro environment close to leaves. Lack of humidity directly around plants is perhaps the number one cause of poor growth. Leaves curl to protect the plant against a