and 4 acre ponds 12 to 16+ feet deep

strain relief attachment ensures that the weighted tubing will not become detached during installation or maintenance

Controls de-icer usage based on both time and temperature

Lifetime(increased from 5 years)

Optional packages include a post mounted cabinet (4x4" post not included)

Airmax LR50 Diaphragm Kit For The SW40 Pond Fountains and 4 acre ponds 12Keep your SW40 Airmax Shallow Water Series Aeration System running at its best with LR50 Maintenance Kit. Over time, seals and moving parts wear and breakdown causing decreased system performance. Airmax Aeration Maintenance Kits contain the parts you need to restore your system to it's maximum potential. Kits should be installed every 6 12 months or if you experience a reduction or loss of bubbles at any of the diffusers to ensure optimum performance.