Hello 3Reefers! Now that my 320 stand is in the basement and my 320 gallon Great Lakes Aquarium is being built, I'm starting to think about the equipment. Flow for this size tank is something new to me; I have accumulated some gadgets so far, but I'm not sure if it's enough. First, the return pump is a Reeflo Gold Hammerhead/Barracuda. Next, I have a Tunze 6215 Wavebox. Finally, I have a 4-Return Oceans Motions Device. The tank is going to be a peninsula tank with the overflow and wavebox on a short end. I will plumb the return into the Oceans Motions device, but I'm not sure where to put the 4 returns. I thought at first to plumb two of the returns down to the bottom of the tank and make a couple of runs along the bottom and hide them with rock and sand. The other two I was going to position at the short end opposite the wavebox. My concern of putting high flow at the bottom is I would end up blowing sand around and/or upsetting the LPS corals. But I'm still not sure if this is enough flow... I aspire to make this a predominantly SPS-filled tank but I do love some softies and LPS. I think the Maxspect Gyre pumps are pretty cool; I thought of getting one to position at the short end of the tank... Decisions, decisions... Any advice would be appreciated!