Aeration? 5 ft. DEEP aquarium - 750 Gallons

[bluetropical]

Setting up a 750 gallon cylinder aquarium. 5 ft Round x 5 ft Height.
Using LifeReef VS3 (72 inch) proten skimmer. Two 5 ft canister filters.
ISSUE? What is the best air pump to use and which air diffuser?
I will only have about 15 fish - estimate 50 inch of fish. So not too heavily loaded.
But still concerned about best option to keep aeration throughout the tank.
Open to suggestions!!!

 

[Peace River]

I'm not even sure that this is the way to go, but to answer your specific question you may want to consider a smaller linear piston pump.