Check the listing for details. NEW Large POND Aeration Kit 2+ Acres 400' SINK Tube 4 Diffusers + 4way valve. Condition: New. Listed at 1389.99 USD. This is our complete aeration package for lakes up to 2+ acre, 40' DEEP pond. Includes:1 - 115v Rocking Piston Compressor + 4 way valve manifold400 feet of 3/8" heavy duty self sink air hose ( 1 - 300' roll + 1 - 100' roll - or 4 - 100' rolls.FOUR air bases with 9" air disc diffusers.+ ALL Clamps and fittings.Item # Description Professional aeration systems are designed for easy installation and will help improve water quality, eliminate temperature stratification, and promote a healthy environment for all aquatic life. Maximum Depth is 40' for these kits. ALL NEW ITEMS :::• Compressor (2 Year Warranty) / 433 watt rated (16' deep x 3 + acres.) Compressor Comes ready to attach a plug to, hardwire into a junction box, or splice onto a power cord ( Brown is Hot, Blue is Neutral, Green is Ground ). Easily accomplished with common household tools.• (4) diffuser with bases - The diffuser assembly comes with a hollow base that can be filled with sand or gravel. This eliminates the need for bricks and straps to get the diffuser to sink. The base is heavy duty rugged plastic with soft edges. Fill the base with small gravel and sand and purge of all air bubbles. Features and Benefits:The air diffuser platform mounts diffuser firmly to bottom of pond up out of any mud.Hollow base is filled with sand or gravel and water to weigh it down and keep shipping cost low.Highest quality EPDM rubber membrane on the market. The membrane will maintain a self-cleaning and flexible nature for 10 years plus! Designed for industrial waste water applications.Disc membrane is the lowest back pressure membrane diffuser on the market. Adds only 4" of back pressure to pump.Koi fish safe!• Fittings & clamps Assembly is Required - Once the pump is powered up you can feel for the intake ( filter threads in this port ) and the Exhaust ( valve / manifold goes on this port ). Tubing will need to be secured with clamps to the valve and diffusers on the opposite end.Pictures are for representation only - actual items may vary in shape, style, size, color, make, model, etc. These do not come with enclosures - the compressor will need to be mounted out of the elements. We have various options of enclosures in our store or you can make your own or ensure its location will not cause any rain, snow, etc to come in contact with it.These items will ship separately. Expect Multiple Packages.If you need more aeration tube or more diffuser tubing we have it available - check our store or email us - All cheaper than anyone else.