, thus avoiding damage to the pond aerator and increasing the lifespan of the machine. Equipped with a 550W pure copper motor, it can aerate ponds up to 3 acres. Highly efficient and quiet 3/4 HP oil-free Rocking Piston Air Pump with maximum 4.7 CFM volume. The operating noise level is below 60dB, which creates a quiet and comfortable environment for your pond. The working temperature ranges from 0?
, which almost fits all seasons.