"Aerate larger ponds and lakes with the Outdoor Water Solutions NightAir III Solar Aerator. This upgraded version of the NightAir Solar Aerator system gives you 3 diffusers you can use to increase your aerating system's output. This solar-panel-powered system improves the health of ponds and lakes up to 20' deep. This system collects and stores solar energy to operate up to 20 hours a day. It's equipped with a larger, higher-output compressor that delivers over 600 watts of solar power to charge its 2 deep-cycle AGM 200 Ah batteries. The system's compressor draws from this power to send air through the included airlines to 3 OWS Optimal Air self-cleaning rubber membrane diffusers with weighted bases at the bottom of your standing water. This air bubbles up through the water, oxygenating and circulating the water to reduce muck, algae, and more. This kit comes with everything you need to install your aerator all you need is a bit of concrete to secure the mounting pole. Includes 2 solar panels with racking system, mounting pole, 3 rubber-membrane diffusers with weighted bases, 500' of 1/2"" weighted airline, 2 deep-cycle AGM 200 Ah batteries, a Bluetooth-enabled solar controller, Quiet Quantum 24V brushless piston compressor, 2 cooling fans, and a powder-coated, locking aluminum cabinet. Mfrs. 2-year limited warranty on compressors and electrical components, 5-year limited warranty on diffusers, bases, and airline, 15-year warranty on solar panels, and lifetime warranty against rust on aluminum cabinet. Aerates ponds and lakes to improve water quality Larger, higher-output compressor that delivers over 600 watts of solar power 2 deep-cycle AGM 200 Ah batteries Operates 20 hours a day Aerates water up to 20' deep 2.2-CFM output at 5 psi Ready to operate only concrete neededIncludes: 2 solar panels with racking system Mounting pole 3 rubber-membrane diffuser with weighted bases 500' of 1/2"" weighted airline 2 deep-cycle AGM 200 Ah batteries Bluetooth-enable solar controller Quiet Quantum 24V brushless piston compressor 2 cooling fans Powder-coated, locking aluminum cabinet"