Aerating pumps for aquaria; Air pumps for hydroponics; Aquarium pumps; Circulating pumps; Counter-current swimming machines for use in swimming pools to enable swimming in place against an adjustable counter-current, featuring pumps, motor, and adjustable current director outlets; Electric pumps; Pond and water garden aeration systems comprising water pumps, air compressors, air blowers and a finned wheel for pressurizing and aerating ponds and aquariums; Submersible pumps; Water pumps for hy...