This Complete system includes: 8 PowerGrower modules 17 gallon controller 17 gallon reservoir Blue tubing & fittings Air line & fittings Dual diaphragm air pump 3-part Flora Kit Clay pebbles not included. “BIG” plant plug n play 8-bucket system The PowerGrower 8-pack is 8 PowerGrower modules connected to one GH PowerGrower Controller. The controller is an integrated 17 gallon reservoir & a 17 gallon controller unit. The controller will maintain the nutrient levels in each module while the reservoir actively recirculates the nutrient to keep pH and PPM levels consistent. This ensures optimized plant growth & provides the grower with a lower maintenance garden. The newly engineered plumbing design ensures uniform delivery of nutrients to each individual chamber. The kit is powered by GH’s Dual Diaphragm Air Pump & includes necessary hardware & Flora Series nutrients. The PowerGrower units can be arranged in a design to suit your growing situation.