Geez..... missed out this part of ur thread. treat it as if i never asked.
Circulation:
Display :2 x Oceans Motions heavy duty 4 ways. 1 running from Closed loop on Sequence Hammerhead (22000lph). The other running from return pumps. These will both be split to 8 outlets. The return pump system will have 8 Oceans Motions revolutions to provide truly random flow. The Closed loop will return via two holes in the back glass, and 6 in the tank bottom. Outlet direction will be dictated using 3/4" Locline fittings