Jevan, An aeration system should be properly sized for your pond's shape, contours and any obstacles (such as an island) to be efficient. Too much air can create turbulance and too little may not help much either.

All that said, a small continuous duty compressor that has a 1.5 CFM air output should suit your needs...There are a couple cheap compressors at Harbor Freight, or Northern Tools and used ones on ebay...be sure to reaserch your pump to make sure it can run 24/7 or it will burn out quickly. Inexpensive diffusers can be ordered from diffuserexpress.com and you will need .5 CFM minimum for each diffuser.

I would suggest you read a lot of the threads in the Aeration Systems section. There are many pitfalls you can run into with home made systems, but they can work well along with being very inventive.

Once you know the theory and facts of how it works, let your imagination go wild.

There is a good reason why high quality aeration systems are so expensive...they work well from the start, are desined for the application where used and last many, many years.

Last edited by Rainman; 03/11/11 11:26 PM.