I use diffuser systems on three of my ponds but I need more information to help you. What is the size and shape of your pond? Where in the country are you located as in does your pond freeze over in winter?

There are others on here that sell systems and may even be near you if we have a clue to where you are located (sorry no offense but I don't understand why some are hesitant to put down their address with the profile)

I get my compressor/diffusers from Stoney Creek Equipment company in Michigan (they have a website at http://www.stoneycreekequip.com/ ,and I think they are one of the most reasonable around. But if you find someone near you they may even come out and help you set it up.

Caution: Don't start one up until this fall unless you gradually break it in. If you crank it up full bore right now you could bring up anoxic water and have a fish kill.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.