Aeration, or better called diffused aeration, basically has no aesthetic value to a water body, but the overall health aspects of this system are enormous. Diffused aeration plates are placed on the bottom of the pond with thousands of microscopic pores and compressed air is sent through weighted tubing to the diffusor plates. This diffused air is then shot up through the water column oxygenating the entire body of water. This not only aids in bacterial consumption of nutrients, but prevents stratification. Stratification is the natural process of a body of water having different levels of temperature and oxygen concentration and can very easily cause fish kills. Aeration is a great insurance policy against fish kills.