Active Aqua Root Spa 5 Gallon, 4 Bucket Hydroponics SystemThe Active Aqua Root Spa 5 Gallon 4 Bucket System is a cheap, easy to use DWC hydroponics system. If you are a beginner to hydroponics or just want to upgrade from a single site system, this four bucket deep water culture system is a great option. When you add this to your grow room or garden, you'll quickly realize why so many growers are using these! This is the cheapest 4 bucket DWC system on the market, and an excellent way to get started in