New GAST #87R645-101-N470X Air pump. This is a 1/2 hp and designed for continuous operation. I used pumps like this to provide air for fish in a pond about an acre in size. This kept pond from freezing over in Winter and killing off my fish.
This is a New pump, and New Piston pump re-build kit with lots of spare parts for any future needs.
I had Bass, Crappie, Blue Gill, Catfish, and Coe fish in my pond and never lost a fish using this setup.
I have over $1,400 invested in this pump and all the parts included with this package deal.