Nutriculture - Oxypot XL (Complete Kit)Overview The Nutriculture Oxypot XL is a high performance deep water culture growing system, which produces excellent results in restricted spaces. This DWC system uses just a small quantity of pebbles. Growers place the plants in a mesh pot, which contains the pebbles. The roots of your plants hang in the growing chamber, which includes an air pump. The air pump constantly oxygenates the feed solution. Roots have continuous access to nutrients,