An ingenious enlargement of our ever-popular XL module, the XXL accommodates 9 gal or 13 gal fabric pots. XXL9 comes with BPA-free, Lead-free, fabric FlexiPots, XXL13 comes with the same, but slightly larger, 13 gal versions. Big as they are, these fabric pots allow growers to produce even larger plants than they might otherwise see in equivalent sized plastic pots. Air-pruning, facilitated by the porous pot sidewalls, eliminates root circling and creates a root structure which is vastly superior in feeding your plants. The same pot porosity increases oxygen exchange in the substrate – supercharging growth. Cultivating big plants, whether one or many, requires time and technique. XXL brings ultra-low maintenance, plant-controlled AQUAvalve5 irrigation into the realm of giant growing – giving you the opportunity and head space to hone your horticultural skills. As with all AutoPot Watering Systems, XXL operates power-free, without the need for running water, and without pumps or computers to maintain. Immense savings in time, money, and ecology are obvious merits. Such virtues are equaled only by the responsiveness with which plants are fed and watered. The AQUAvalve5s that regulate every module respond exactly to each individual plant’s needs, supplying water and nutrient solution only as and when required, without recirculation or a drop of waste.