hello i have recently purchased a home with a 1/2 acre pond. pond is 14 ft deep at most average roughly id say 9 approx. gets deep quickly off the banks. im looking to help promote and clean up the pond by adding diffused aeration.

i currently have a kasco 3/4 hp vfx aeration fountain for looks sound and a little aeration. i plan on keeping this as well.

im looking at the vertex two diffuser system but dont need a cabinet. the other is the kasco, and this one http://www.livingwateraeration.com/2-acre-pond-aeration-system.html

whats the better system and is two heads enough due to the shape?