These kits are the perfect addition to any hydroponic system needing valuable oxygen. In a hydroponic environment it is essential to ensure plant’s roots are supplied with oxygen. If the oxygen content of the water is inadequate, the plant growth will slow in proportion to oxygen availability. Many growers employ the combination of an air pump and air stone to add oxygen to their solution. This is a viable option for many growers and one that is able to increase DO levels fairly inexpensively. An air pump pumps air through food grade plastic tubing to the bottom of the reservoir, where it is attached to an air stone. The air stone then diffuses the air into small bubbles which rise through the water, increasing the DO level as they rise. This is also a great method for keeping one’s water and nutrients mixed, preventing nutrients from settling to the bottom of the reservoir.