Update...the fish are fine. I'm paranoid that I see an increase in gill movement every time the lights come on but I'm sure that's just my insanity coming through, at least that's what the small voice in my head says. Lol
Replaced the powerhead and left it on for a few hours, then off for a but then on again and so on trying to get everyone use to the increase in flow. The maxijets I had worked ok and moved a lot of water but only in a small, jet stream. These hydors move a ton of water but you never feel like its blasting away.
Still figuring out where to position the power head so the corals I have now get what they need and not too much more.
So right now, in my 46 gal tank I have two hydors, one 550 and one 750. I also have my skimmer And a HOB filter I use to run carbon in. Lots of flow, I think, but hopefully not too much.