Water Movement for 75 gallon

[lostoften]

I recently purchased a tunze nano wavebox and wondering what pumps would be suggested for circulation. I currently have 1 koralia 4 positioned underneath the wavebox pointing upward and across the tank. I upgraded from 2 koralia 4's to the wavebox because some of my corals were not liking the direct flow (frogspawn). I also have a CPR dual bak-pack skimmer that has 2 outlets located in the middle of the tank.

Thanks,
Lost