For balcony growers, compact coil pots use a small copper helix inserted into the medium

https://www.scribd.com/document/1033880602/Winterizing-Your-Electroculture-Garden-Setup-142979

For balcony growers, compact coil pots use a small copper helix inserted into the medium, aiming to localize subtle charges near roots without requiring tall poles or complex grounding arrangements.