You'll watch healthy plants flourish right before your eyes with this Hydrofarm Active Aqua Root Spa 5 Gallon 4 Bucket System.This 5-gallon bucket system is simple, efficient, and comes with everything you need. It's easy to use and the most cost-effective way to pump raw air into the nutrient solution and witness your plants thrive. You can use your choice of hydroponic media such as clay pebbles, #4 perlite, Rockwool mini cubes, coco chips, etc.The use of soil should be avoided, as it contains dust, fungi, and bacteria which can all contaminate a hydroponics system.These buckets have a water-tight seal for no leakage, an 8-inch bucket basket to hold your growing medium, a multi-purpose air hose, an air pump to oxygenate your water, a grommet fitting, elbow fitting, and black tubing. Experience superior plant growth inexpensively and with very little effort with this Hydrofarm Active Aqua Root Spa 5 Gallon 4 Bucket System.