The root spa is a deep water culture system. This 5 gallon bucket system is so simple yet grows large plants efficiently. After a very short time, you will realize the advantage of the simplicity of this uniquely easy-to-use, inexpensive, & forgiving system. Pumping raw air into the nutrient solution, without the need of expensive & often troublesome air stones is not only cost effective, but your plants will also thrive. Water tight seal to make sure no leaks. 10" 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, ½" grommet fitting ½" elbow Fitting ¼" black tubing clay pebble media sold separately.