Hailea ACO Series Air Pump Compressors. ACO208, ACO308, ACO318, ACO328, ACO388D, ACO009E, ACO300A, ACO500. GREAT VALUE, POWERFUL, RELIABLE. Hailea ACO Series Compressors. Suitable for oxygenating aquariums and ponds and hydroponics systems, they are also used for compost tea brewers, waste water treatment and other applications such as inflation and dusting….