OWS AerMaster Pro 8 - Deep Pond Electric AeratorOutdoor Water Solutions AerMaster Pro 8 is a 3 4 HP Electric Aerator This system is great for ponds up to 1 1 2 acres. It works great for ponds up to 40 ft deep. AerMaster Pro 8 includes: 3 4 HP Rocking Piston Compressor Circulating Fans 2 Valve Manifold with 2 Adjustable Valves 300 ft of 1 2" weighted airline 2 Air Double Disc Diffuser with Self Sinking Bases 1 Pressure Relief Valve 1 Oil Filled Pressure Gauge Powder Coated Aluminum Cabinet AerMaster