Thanks for the flow thoughts guys.... I hope to be able to ramp up the pump on my "spraybar" setup to get adequate movement through the tank. hopefully in these pics you can see what I designed. There are actually (14) 1/4 inch outlets for water on the "pressure" return. I put 3 "jets" in each rear corner and the remainder are in the center facing all different directions. The rock work is on a PVC stand covered in foam to mimic rock so I have a huge cave under all my rock. There are 4 jets under there to keep it cleaned out. I am a swimming pool contractor so I built these like I would in a pool when I want less flow in certain areas. I decided what areas would be highest flow and fed those jets first and then the rest are in series with the last jets receiving the least flow in the bottom of the tank. I actually have no problems with bubbles getting back into the display with my current flow and hope that I don't have trouble when I up the pump sizes to increase flow. My sump is actually fairly large and I think the size helps. The refugium is 24x24x18deep, the protein skimmer area is 24x18x10 deep with a 3" wide bubble trap. the return area is in the center and measures 24x18x10 deep. The (2) drains in my tank are both 1 1/2" so I am capable of a lot more water draining than I am using currently.
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