Windmills not in a cement base are prone to blow over, as you now know. Bottom aeration similar to the windmill but with an electric compressor (rotary or rocking piston) will also be alot less maintenance than a windmill or a fountain. Motors in fountains work very hard while running and motor life is relatively short compared to continuous duty rated air compressors. Compressor bottom aerator unit will mix entire pond water column whereas fountain will only mix about as deep as the intake tube. You will also move more water per electrical dollar with a compressor aerator compared to a fountain. Fountains tend to be inefficient because they throw water above the surface into the air which requires a lot of electricity -hp- effort. It is easier to move, lift, push water within water compared to lifting/pushing it above the surface.

PS - YOU may be able to sell the damaged windmll on ebay or locally. There is a demand for repairable aerator windmills.

Last edited by Bill Cody; 09/07/10 08:12 PM.
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management