The Root Spa RS5GAL4SYS is a deep water culture system. This 5-gallon, 4-bucket system is so simple to grow small or large plants efficiently. After a very short time, you will realize the advantage of gardening in an easy-to-use, inexpensive, and forgiving system. Pumping raw air into the nutrient solution, without the need of troublesome air stones is also cost effective. Comes with a water tight seal to guarantee no leaks, 10-inch bucket basket to hold your choice of growing medium, multi-purpose air hose delivers air from the pump to the bottom of the bucket, air pump to oxygenate your water to encourage root growth, 1/2-inch grommet fitting, 1/2-inch elbow fitting and 1/4-inch black tubing. Media sold separately.