Four Enkadrain panels are inserted into the interior walls of Potter, which thermally insulate the soil (with a strong reduction in the thermal transmittance of the walls in summer), providing ventilation for the roots, but also for the lower layers of the planter. A watertight shaped PVC bag is placed on the steel bottom, which prevents contact between the walls, soil, moisture and fertiliser and ensures a long lifespan of the planter, as well as overheating of the bottom.
Water reserve with controlled drainage The second PVC bottom is equipped with an overflow drain with water retention function. When watering, the water flows through the pipe, arrives directly at the bottom and does not escape unless it reaches the overflow level. Clay and soil are given time to absorb it by capillarity and transfer it to the upper layers, ensuring a uniform moisture level over time. The drain can be cut or lengthened to increase the water reserve, and has a root inhibitor filter that prevents the water outlet hole from becoming blocked.