Welcome, Kellyann. You should start a thread with a pic or two and let the Pond Boss members get to work
I would guess you don't need much aeration with all the aquatic plants, they create DO all on their own. I am sure there are a few bugs and skeeters though and stocking some minnows might improve the beach experience by knocking those numbers down. They also attract birds of prey, if you are into wildlife viewing.
Just to move water around you could put in a solar fountain/pump. Any movement of the water will improve the swimming quality. I would suggest keeping as many plants in and around the pond to keep the water healthy without steady aeration.
