Deep Water Culture (DWC) Hydroponic Bubbler Bucket Kit by PowerGrow Systems (4) 5 Gallon - 6" Buckets Easy to use complete Deep Water Culture Hydroponic System! 4 Growing Sites! Deep Water Kit Includes Air pump, air lines, air stones, 6" basket lids, (4) 5 gallon FDA buckets + 1 Year USA Warranty Each Deep Water Culture bucket includes a water level indicator and drain so water changes are easy! Easily grow plants to maturity with the PowerGrow Deep Water Culture Kit - Made in the USA! Let's you grow 4 different plants to maturity in one system!