Bottom-Up Aeration Keeps Ponds up to 3 Acres Healthy Year-Round The Airmax PondSeries PS40 with 3 diffusers delivers professional-grade bottom-up aeration for ponds up to 3 acres (1.2 ha) and up to 50 feet (15 m) deep. The whisper-quiet SilentAir™ 3/4 HP rocking piston compressor uses up to 60% less electricity than comparable systems while producing substantially more airflow. Three ProAir 4 weighted membrane diffusers rest on the pond floor and release millions of micro-bubbles, lifting oxygen-depleted bottom water to the surface, eliminating stratification, reducing muck accumulation, and protecting fish through winter ice events. ProAir 4 Weighted Membrane Diffuser Unlike traditional air stones, the ProAir 4 uses a flexible membrane stick that resists cracking and never requires acid washing. An integrated check valve protects the compressor from back-pressure, and the sled-style base keeps the diffuser upright on the pond floor during installation and service. Non-stick Teflon coating prevents debris accumulation. System Specifications Coverage Up to 3 acres (1.2 ha) Max Depth 50 ft (15 m) Compressor SilentAir™ 3/4 HP rocking piston Diffusers Included 3 × ProAir 4 weighted membrane diffusers Airline Not included (sold separately) Warranty 3-year compressor, 5-year diffuser Certifications ETL Listed, Made in the USA Installation note: Airline is not included with this configuration. Select Airmax EasySet weighted or direct-burial airline separately based on pond layout. A post-mount cabinet kit is available for secure shoreside installation.
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