What is your pond used for?
Whether you use your pond for raising fish, livestock, irrigation or for recreational purposes, Koenders has the right system for you. For a pond focused on raising fish, we recommend 24/7 aeration available withour Electric Aerator. For most other applications, our Free-Air Windmill will suit your needs.

In what type of climate do you live?
Koenders Aeration Systems are designed to withstand extreme weather conditions. Our self-governing windmill will turn itself out of the wind at 27 mph. Our Freeze Control Unit will keep the air flowing, and with constant aeration you con prevent icing near the Airstone.

How much wind is needed to operate a Free-Air Windmill System?
3-5 mph wind will operate the Airstone and produce a small volume of water form the pump.

How do I decide what size windmill is right for me?
If you live in flat terrain, a 12' System will suffice. If you live in an area with varying elevations, a 20' System will catch the most wind possible. Your Windmill may be located up to 1000' away from you pond.

Can the Free-Air Windmill System withstand high winds?
The windmill head is self-governing and blades will turn out of direct wind when speeds exceed 27 mph. Most damage to the windmill results from improper anchoring.

Will the Air Line freeze in winter or during light frosts?
The Airstone Foot Valve is designed for one-way only airflow, preventing moisture from entering the Air Line. A Freeze Control Unit can also be installed to ensure the Air Line stays open year-round. For added protection, install a Pressure Release Valve to ensure excess pressure does not build up in the Air Line and damage the diaphragm.

Will aeration rid my pond of algae and weeds?
Aeration will reduce and may even eliminate algae by breaking down nutrients algae feed on. Aeration can also improve the aesthetics and overall health of ponds. Improving water quality will reduce the chance of unsightly algae blooms, sludge accumulation, and fish kills. By targeting the root of the problem, not just the symptoms, you will have a much healthier pond.