In the heat of the summer there are always schools of fish congregated by aeration diffusers. When gizzard shad are present you can walk across them they are so thick...Crappies hang underneath them about 6' down....big bluegills alot of times hug tight to the bottom in a 50 yard circle around them....and bass and muskie and walleye move in and out all day long....you can literally fish an aerator all day long as the fish move in and out....

I install aeration diffusers strategically in larger bodies of water just to congregate fish. Most aeration companies do not market their products for this purpose, but I think there is tremendous potential there...