Active Aqua Root Spa 5 Gallon 4 Bucket SystemActive Aqua Root Spa 5 Gallon 4 Bucket System Deep Water Culture Hydroponics Get ready for fast, healthy plant growth with the Active Aqua Root Spa 4 Bucket System, a deep water culture (DWC) hydroponic solution designed for growers who want simplicity and results. This system features four 5 gallon buckets, each equipped with its own air line, delivering oxygen rich nutrient solution directly to your plant rootswithout the need for fragile or clog