Abstract: Liquid fractionation systems utilizing a novel low pressure liquid delivery system generated by centrifugal force utilizing a rotating cylinder device. The rotating cylinder device distributes liquid solution to the roots of plants by use of centrifugal force, thereby eliminating the need for a high-pressure pump and nozzles. The geometrical shape of the enclosed root growth chamber is such that it allows for fractionated droplets to ricochet in multiple random directions thus completely surrounding the plant roots in 360° in any plane. The invention also provides aeroponics apparati utilizing the low-pressure liquid delivery system, methods for fractionating liquid, methods for delivering the fractionated liquid to plants, and methods for growing plants and germinating seeds.