The low speed surface aerator is a device for biology aeration with high efficiency. Each plant uses a process of pre-chlorination, aeration, filtration, and chlorine residual. Dissolved oxygen levels can be increased through two methods, aeration and oxygenation. Soil biodiversity is also influenced by reduced soil aeration. Fertile, sandy, loamy soils with good aeration, proper drainage, and high oxygen availability are preferred. LECA can be mixed with heavy soil to improve its aeration and drainage. To prevent fish deaths, nitrification via aeration prior to discharge is often desirable. Variations include number of composting vaults, removable vault, urine diversion and active mixing/aeration. Mixed liquor suspended solids are the solids under aeration. The submerged configuration relies on coarse bubble aeration to produce mixing and limit fouling. Excellent aeration is the main advantage of aeroponics. Formation of a differential aeration cell leads to corrosion inside the crevices. Bins need holes or mesh for aeration. The placement of the grape plants is important to provide for proper aeration and lighting. This means that no aeration of the devices is required immediately following the sterilization cycle.