OASE AquaOxy Air Injector Pump The AquaOxy system is a safe and efficient way of increasing oxygen levels in the pond. AquaOxy is a quiet, energy efficient, low-voltage (12V) membrane air injector pump with 2 adjustable airflow outlets. AquaOxy can be used with flow-through filters to provide oxygen and help grow beneficial bacteria. Rated for outdoor use, no additional protection from the elements needed. Included air stones are heavy in weight in order to stay in place and diffuse the injected air very finely.