thanks everyone,i will look into your advise.i was real close to buying a windmill aerator this spring and putting it up on my old farm windmill tower.but then i thought theres a reason why those old farm windmills are all broken.so i thought i doubt if the aerator one could survive either.plus we had huge wind gusts for a week straight at the time so that just made me think it wasnt a good investment.im not getting any younger to be up 40ft servicing a windmill.three reasons why i passed on that.i hope to buy a good energy efficient electric aerator sometime.