Abstract: A single, unitary reactor and its feed mechanism for microorganisms, nutrients, and, commonly, also enzymes are disclosed. The reactor forms and dispenses a slurried biomass for turf and soil enhancement, water body treatment and agricultural application through conventional irrigation systems. The feed mechanism feed the various components into the slurry within the reactor on any desired schedule, including different schedules for different components. The microorganisms, nutrients and enzymes are provided in the form of pellets to individual compartments within the feed device, and they are individually injected into the slurry intermittently upon a predetermined schedule. Preferably the housing will contain a plurality of the compartments for a variety of different slurry components. The component pellets may be of any convenient shape and size, but preferably will be either disk-shaped or spherical.