There are hand held wind meters. You can buy them on ebay where I bought mine which can borrow free of charge if you buy a new battery for it. Windmills require more maintenance compared to an electric air compressor system. I have had both for 23 yrs. Ted Lea Forevergreen has both types of aeration systems.
From your picture it apprears the pond is shaped quite a bit longer than wide which indicates you should have two diffussers to get mixing at both ends. The windmill mixes only a small or partial length section of my small long narrow 0.3 ac pond (60x220ft pond size).
One can bury 1200 ft of black irrigation pipe (3/4"-1", most frequent is 1/2") as an air delivery tube from the power source to the pond. Larger diameters of air line cause less pressure and flow loss for long tubing runs. For long 1/2" dia air lines over 400ft a higher pressure compresssor is required. Compressor size, pressure rating and air line size are usually sized according to the systems needs.
Last edited by Bill Cody; 02/22/13 09:20 PM.
