The Fuji mac 80r2 septic air pump aerator is the most energy efficient septic pump on the market using only 1.0 amp and 52 watts. This pump costs approximately $3 monthly to run. It is amazing. It puts out 80 l.p.m of air at 2.2 psi matching all o.e.m specs. It has an unmatched 2 year manufacturer warranty the best in the industry. With unmatched reliability and longevity It is the air pump of choice all over the world for aerobic treatment units. it is also the quietest pump available today at 30 db. Its running temperature is 70f greatly reducing wear of the diaphragm parts. Fuji mac set a new industry benchmark with this pump.