Shallow Pond Aerator System for 1/4 Acre – Airmax SW20 Bottom Diffused Aeration Kit

Airmax Pond Aerators Airmax SW20 Shallow Water Aeration System A bottom-diffused aeration system built specifically for shallow ponds up to 1/4 acre and 6 ft deep — reducing algae, eliminating odors, and keeping the water column oxygenated for healthier fish and plants. ✓ Free Shipping ✓ 10-Year Cabinet Warranty ✓ Aerates Up to 1/4 Acre ✓ 888-825-6214 What's Included 2 ProAir2 weighted diffusers Optional (2) 100 ft self-weighted airline rolls LR25 SilentAir diaphragm compressor Airmax composite cabinet with cooling fan 6 ft power cord Why Aerate a Shallow Pond? Shallow ponds and irregularly shaped water bodies present a unique aeration challenge — less depth means each diffuser covers less area, so many systems end up oversized and overpriced. The SW20 solves this with two dedicated diffuser plates that spread coverage across separate areas of your pond, reaching bends and shallow zones a single large diffuser can't. The result is reduced algae growth, fewer foul odors, and healthier, better-oxygenated water for your fish. Key Features 🌁 Aerates Up to 1/4 Acre Purpose-built for small and shallow ponds up to 6 ft deep. 🤫 Whisper-Quiet LR25 Compressor An energy-efficient diaphragm compressor that runs for as little as $3.60/month in electricity. 🏠 Weatherproof Cabinet Faux-rock composite cabinet blends into the landscape while protecting internal components — 10-year warranty. 🔧 Two Diffuser Plates Spreads coverage across two separate areas — ideal for irregularly shaped or depth-restricted ponds. 💰 Low Operating Cost Runs 24/7 for as little as $3.60 per month in electricity. ⚙️ Easy Maintenance Membrane diffusers with check valves and quick-disconnect airline fittings for simple removal and storage. Get Mine Now → Technical Specifications Max Pond Size Up to 1/4 Acre Max Diffuser Depth 6 ft Compressor LR25 SilentAir Diaphragm Max/Running Amps 0.43 Voltage 115V Wattage 50 Watts Max CFM 2.5 Diffusers 2 ProAir2 Weighted Diffusers Cabinet Airmax Composite Cabinet, 23"L x 17"W x 15"H Power Cord 6 ft Monthly Operating Cost (24/7) $3.60* ProAir Diffuser Warranty 5 Years Compressor & Electrical Warranty 3 Years Composite Cabinet Warranty 10 Years EasySet Airline Warranty 5 Years *Estimated cost based on average electricity rates; actual cost varies by location. Built to Last LR25 SilentAir Compressor A powerful yet energy-efficient diaphragm compressor mounted on vibration-reducing rubber feet for quiet operation, with an integrated air regulator for easy airflow management. Backed by a 3-year warranty. Airmax Composite Cabinet An ETL-certified composite cabinet with a faux-rock finish blends into any landscape while protecting the compressor and electrical components. An elevated base guards against flood water, and a ventilation fan with rain shroud keeps things cool and dry. Backed by a 10-year warranty. ProAir2 Weighted Diffusers High-efficiency membrane diffusers release fine oxygen bubbles into the water column without the maintenance headaches of traditional air stones. An integrated check valve prevents backpressure on the compressor, and the weighted sled keeps each diffuser upright and submerged during installation. Backed by a 5-year warranty. Need a Replacement Part? 🔧 Replacement Compressor If your SW20's compressor has failed, the genuine Airmax LR25 (SW20) replacement compressor is a direct fit. Shop SW20 Replacement Compressor → Resources 📄Owner's Manual 📄Owner's Manual (Spanish) 📄ProAir2 Diffuser Manual 🎥Installation Video 🎥Ecosystem Video Frequently Asked Questions Why does a shallow pond need two diffusers instead of one bigger one? Less water depth means each diffuser covers a smaller area, so spreading two plates across separate zones gives more even coverage than a single large diffuser would in shallow or irregularly shaped ponds. How far can the cabinet be from the pond? The compressor cabinet can sit at the water's edge or up to 1/4 mile away, connected by airline, so you're not limited to running power right to the shoreline. Do I need an electrician to install this? No special wiring is required at the pond itself — Airmax EasySet airline delivers oxygen to the water while the compressor plugs into a standard outlet at the cabinet location. What's covered under warranty? The ProAir diffusers and EasySet airline are covered for 5 years, the compressor and electrical components for 3 years, and the composite cabinet for 10 years. My compressor stopped working — can I buy just that part? Yes — the LR25 (SW20) replacement compressor is sold separately and is a direct fit for the SW20. Questions? Our pond experts are ready to help. Call or email us — we'll help you size the right aeration system for your pond. 📞 888-825-6214 Get Mine Now →