Air Stone Diffuser & Foot Valve.

Details 

It increases the aeration effect by up to 800%. A Foot Valve is used in conjunction with Koenders Airstone Diffuser to prevent the back flow of water. Requires 3/8" airline.

Ornamental Windmill.

Details 

These systems are for decorative purposes only. They are built to same exacting standards of the other Koenders Windmills but do not have operational compressors, airlines and accessories. **SHIPPING is NOT INCLUDED**

Windmill.

Details 

Tower Design (12' - 16' - 20' - 24' Heights) The strong, cross brace reinforcement design gives added strenght to any tower height. This design also discourages climbing of the tower. 100' of Airline, Airstone Diffuser and Foot Valve. Up to a 3 year warranty. **SHIPPING is NOT INCLUDED**

Windmill Double Diaphragm.

Details 

Koenders has introduced a dual diaphragm compressor that pumps double the air volume, ideal for ponds that are odd shaped or larger than 2 acres. Providing more oxygen to the pond helps turn unhealthy and stagnant water into a clean and odor free paradise. **SHIPPING is NOT INCLUDED**

Windmill Double Diaphragm Head.

Details 

Koenders has introduced a dual diaphragm compressor that pumps double the air volume, ideal for ponds that are odd shaped or larger than 2 acres. Providing more oxygen to the pond helps turn unhealthy and stagnant water into a clean and odor free paradise. **SHIPPING is NOT INCLUDED**

Windmill Freeze Control.

Details 

If you are in a colder climate then we recommend attaching the Koenders Freeze Control Unit. Whenever you compress air condensation can form in the airline and can create an ice blockage if it is cold. With a freeze control unit alcohol will be automatically be injected to melt the ice. This will help ensure aeration during winter as well as help protect the compressor from backpressure due to blockages. We recommend using Isopropyl Alcohol at 90-99% purity **SHIPPING is NOT INCLUDED**

Windmill Head.

Details 

Single Pump Compressor Suitable for up to 2 acre ponds and produces up to 1.5 cfm. A proven low-maintenance, low cost, highly effective method of maintaining water quality! **SHIPPING is NOT INCLUDED**

Windmill Pivot Point Tower Hinges.

Details 

Makes taking tower down for maintenance easier.