Lifetime(increased from 5 years)

Controls de-icer usage based on both time and temperature

Effective aeration can be achieved in 1/4 acre ponds 5 to 8 feet deep

and 4 acre ponds 12 to 16+ feet deep

including a cooling fan

Airmax LR50 Diaphragm Kit For The SW40 Pond Fountains Lifetime(increased from 5 years)Keep 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.