I bought a 120 cfm system from Nashville pond and couldn't be happier. Excellent service and support.
My BOW is very similar to yours.
I'm in my first summer of aeration and can already see the positive effects.
I bought a diaphragm rebuild kit to have on hand. I run the pump 8hrs a day x7 a week and my monthly electric bill is $40.

https://nashvillepond.com/shop/pond-aeration-units/np120-aeration-system/

Last edited by Clay N' Pray; 06/27/18 04:05 AM.
Half acre 30 year old farm pond, Mebane NC. Aeration & feeder.
LMB, CC, SC, BG, HBC, two no account welfare carp and nine seasonal Tilapia that all the other fish are terrified of.