Charles Austen Air Pumps

About

Charles Austen has been building diaphragm pumps in Britain since the 1940s, and the ET series is what serious DWC growers fit when a hobby aquarium pump has failed once too often. They are rebuildable rather than disposable - a service kit brings a tired pump back to full output. ET series compressors: ET60, ET80, ET100, ET120 and ET150, plus the ET100-AO - sized by the volume of air they deliver. See all air pumps and air stones . Service kits: Charles Austen service kits with replacement diaphragms, so a pump is repaired rather than binned. Air delivery: The 7 inch air ring bubbler for even oxygenation across a reservoir, and 4mm air line fittings - browse pipes, hoses and fittings . Why choose Charles Austen? Dissolved oxygen is what makes deep water culture work, and it is the first thing to fail when a cheap pump weakens. An ET pump holds its output for years, and when the diaphragm eventually wears you fit a service kit rather than buying another pump. Charles Austen FAQs Which ET size do I need? It scales with reservoir volume and the number of air stones. As a rough guide the ET60 suits a single DWC pot, the ET100 and up suit multi-pot systems and larger tanks. How often does a pump need servicing? Years rather than months in normal use. Falling output or increased noise is the sign the diaphragm is due for replacement. Why buy Charles Austen from The Hydro Bros? We stock the Charles Austen range in full, ship discreetly across the UK and Europe, and know these products because we use them. With excellent customer reviews on Trustpilot and staff who actually grow, you get the right kit first time.