hygger Koi Air Pump Pond Aerator Powerful Pond Air Pump Aerator Outdoor Septic Air Pump Hydroponic Air Pump 475/800/1270/2550GPH For Pond Aeration Waste Treatment Aquarium Fish Farm Seafood Restaurant

Perfect nice and quiet

I bought this to replace my broken worn out air pump. To begin with the noise the Hygger air pump is very very quiet compared to my old air pump. I have been running this air pump for a month now running 24/7 and the performance hasn't changed since the day it was plugged in. Highly recommend this unit.

Very impressive pump to aerate my 400 gal koi tank at 3ft deep. Plenty of air for a 9-inch diffuser. Best of all, it’s very quiet. Could barely hear it standing 2ft from the pump. Easy to install. Great value. Not sure how long the diaphragm will last though

The Hygger pump is quiet and is working in my pond quite well. It has only been operating for a couple of days, so it's longevity is undetermined at this point.

Works great. I have a 5200 gallon indoor koi pond (CoffeeandKoi.com). I use hygger dc pumps for low costs and just replaced the air pump with this one. It os quieter and runs cooler. Great products.