The Tank Shark mixing system transfers applied motive energy to the mass of water in the reservoir, placing it in motion. The nozzle motive energy moves colder water from the base of the reservoir to the upper, warmer stratified layers. This thermal disruption causes additional mixing beyond the energy associated with the nozzle itself. Optional chemical injection occurs in the violent area of the nozzle discharge to help provide complete mixing and distribution. Conveniently, the extreme velocity at the nozzle discharge provides for self cleaning of the injection nozzles.