whats you flow?

[Mrfish55]

So how does one calculate the flow for a wavebox? It moves the entire volume of the tank every cycle (1-2sec.)
not counting the wavebox I have
2x return pumps @1100gph ea.=2200
K-4 =1200
k-3 x 2@850=1700
Total 5100gph in 300 gal tank = 17 times turnover + wavebox.
Don't want to increase flow much more as I think I am pushing the limit for the bubble coral, all sps are doing fine as is.