and more importantly

two kits are provided for the dual piston compressors

you have the freedom to adjust the aerating fountain to fit your pond

3/8" airline is sold separately and can be found in the related products tab on this page

the greater the area of coverage with this system

Kasco Bottom Screen For Surface Aerators Beneficial Pond Bacteria and more importantlyIt's stongly suggested to use this screen in ponds that have debris of any kind as it will protect the motor from clogging and possible damage. This optional Kasco Bottom Screen fits all of the currently listed, High Oxygen Transfer Surface Aerators, including the Kasco 2400AF, 3400AF, 4400AF, 8400AF, 3. 1AF, 5. 1AF models. Please be sure to note in the comment box on the checkout page which AF unit you are using it with so we can fit the screen