The Wilma is an active hydro version of a drip irrigation system. Plants benefit from the accurate feeding of active hydroponics, combined with the flexibility of growing in pots. Pots are placed on a tray above a nutrient solution tank. Plants and drippers are placed in the pots with the chosen growing medium; clay, coco, soil or rockwool. Set the irrigation frequency with a timer, which triggers the drippers to automatically feed the plants.