{"product_id":"charles-austen-et-120-air-pump","title":"Charles Austen ET120 Quiet Air Pump for DWC \u0026 Hydro","description":"\u003ch2\u003eSerious Oxygen for the Reservoir, Without the Racket\u003c\/h2\u003e\u003cp\u003eThe Charles Austen ET120 sits at the top of the ET range, delivering \u003cstrong\u003e120 litres per minute\u003c\/strong\u003e into your nutrient tank. These pumps are renowned for being \u003cstrong\u003eexceptionally quiet\u003c\/strong\u003e despite how much air they shift, which matters when the pump runs around the clock. It is precision-engineered for \u003cstrong\u003eoxygenating nutrient reservoirs\u003c\/strong\u003e and suits \u003cstrong\u003edeep water culture systems, WaterFarms and AquaFarms\u003c\/strong\u003e. Air is delivered through an airline into submerged air stones, and the output can be split across \u003cstrong\u003emultiple air stones via a manifold\u003c\/strong\u003e. The wider ET range runs from \u003cstrong\u003e30 to 120 litres per minute\u003c\/strong\u003e, making the ET120 the one for larger tanks and multi-pot setups.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120 litres per minute\u003c\/strong\u003e - enough air for a large reservoir or a bank of DWC pots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuinely quiet running\u003c\/strong\u003e - high output without the buzz of cheaper pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns multiple air stones\u003c\/strong\u003e - split through a manifold across the whole tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for hydro\u003c\/strong\u003e - designed around DWC, WaterFarm and AquaFarm systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision engineered\u003c\/strong\u003e - built for continuous 24\/7 operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull range available\u003c\/strong\u003e - 30 to 120 litres per minute to match tank size.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStagnant Solution and Roots That Never Take Off\u003c\/h3\u003e\u003cp\u003eAn under-aerated reservoir is one of the quietest killers in hydroponics. Dissolved oxygen drops, roots go brown and slimy, poor nutrient uptake follows, and you end up blaming the feed chart for slow growth and low yields that are really an air problem. Pushing 120 litres per minute through air stones keeps solution moving and oxygen-rich, so white root mass develops fast.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSiting:\u003c\/strong\u003e mount above the water line so solution cannot siphon back into the pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e run airline to a manifold, then split to your submerged air stones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistribution:\u003c\/strong\u003e spread stones evenly, or one per DWC pot, for consistent oxygenation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRunning time:\u003c\/strong\u003e leave it running 24 hours a day - aeration should never be timed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e check stones for clogging and keep the intake clear of dust.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Charles Austen ET120\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Output:\u003c\/strong\u003e 120 litres per minute\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eET Range Output:\u003c\/strong\u003e 30 to 120 litres per minute\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Deep water culture, WaterFarm and AquaFarm, nutrient reservoirs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet:\u003c\/strong\u003e Airline tube, suitable for manifold splitting to multiple air stones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise:\u003c\/strong\u003e Quiet running for the output class\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuty:\u003c\/strong\u003e Continuous 24\/7 operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Charles Austen","offers":[{"title":"Default Title","offer_id":53445763596554,"sku":null,"price":161.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/charles-austen-et-120-air-pump-1.jpg?v=1785332723","url":"https:\/\/hydrocropshop.co.uk\/products\/charles-austen-et-120-air-pump","provider":"Hydro Crop Shop","version":"1.0","type":"link"}