so, right now I am trying to play with my flow a little as I have just added my first corals. I have a canister filter running at 550gph (fixed, there is no way to change the flow rate), that feeds back into a spray bar that runs the length of my four foot tank (75gal) . on the same side as the filter intake I have a 1080gph DC programable PH at 80% and directly opposite a 660gph PH at 100%. all three are pointed mildly towards the surface and my surface agitation is fantastic. I wanted suggestions however, on whether or not this was good or if it could be improved to make sure my corals get the best flow possible. right now the two zoanthids are being shy, but that's pretty fair, they've had a big day. the GSP is mostly out doing his thing, but seems like its not moving as much as in the store, which makes me think maybe the flow in my tank is lower than it should be.