Abstract: An ion source apparatus has a body, a heat dissipating base, at least two supporting shafts, a guiding block, and a shunt. The body has a holding chamber formed inside the body. The heat dissipating base is located in the holding chamber of the body. The at least two supporting shafts are mounted through the heat dissipating base. The guiding block is mounted on the at least two supporting shafts, and is a hollow circular block. The shunt is located at a center of a top surface of the heat dissipating base, and is located below the mounting hole of the guiding block.

Abstract: A water pressure-type aeration device including a water pump that generates powerful water pressure, with the water pumped through a water distribution head and a number of water distribution tubes which are placed throughout the water of a pond (or tank). The ends of the water distribution tubes are installed to cavitation housings, with the each of the cavitation housings connected at an angle of 90 degrees to the fresh air supply tubes which are directly conjoined to air filter and delivery devices floating on the surface of the water. When water is conveyed under pressure to the cavitation housings at the ends of the water distribution tubes, rear pressure constrictive openings in conjunction with a spray guide elements inside the housings generate powerful water pressure and the resulting friction across the tubular openings of fresh air supply tubes draw air in that is mixed with water in the cavitation housings and discharged from spray nozzles, thereby replenishing oxygen in the water.