Gyre Placement

[brisco]

I have a 100 gal display which is 5 feet long. At one end I run a gyre 150, 3 inches below the waterline horizontally. It is programed with the icecap controller and runs 8 different programs throughout 24 hours, this keeps the corals happy as the flow changes. It pushes water all the way across the tank and back. The tank has a center overflow, so I use the gyre 130 vertically in the corner of the overflow opposite to the gyre 150. The 130 is just set on a pulse as it doesn't have a controller. This avoids any dead spots. Every coral seems happy with this set up, however, I did have to build a spot for my bubble coral that blocked the "return flow" on the bottom of the tank from the 150.