With most sps, there isnt really such a thing as to much flow, but with meatier corals like lps or mushrooms/softies there is and you have to know/place them accordingly. most of that flow is across the top half of the tank where my sps is and they love it, lower to mid area is med flow (Lps areas) and bottom corners are pretty low flow (Softy zones).
I was running an wp25 and wp10 for a while till the wp25 died on me. It was less flow and corals generally seemed happy, but since I had a mp40 laying around I replaced with that and now I think I should have put that in alot sooner. It provides twice the flow but since it isnt a tight narrow beam of high pressure it actually works a lot better and my coral couldnt be happier. Plus my fish love swimming up in the path of it and riding the flow back across the tank.