[droog]

Hi,

I made this a separate thread from the previous one for clarity. I'm interested in trying to create a Gyre flow within my 120g (regular dimensions) tank.

Rockwork is essentially two islands, with open space along the top, quite a lot of open space at the front and a little space at the back (one fist size rock just touches the back wall).

What would the best setting be to create a gyre flow in this tank?

- Mount one pump to the left and rear, the other right and front at the same height?

- Lets say I'm using long pulse mode for the sake of argument. Should the pumps be in SYNC or ANTI-SYNC mode to get gyre flow. I could image arguments both ways

- Now lets say I'm using ReefCrest mode. Sync or Anti-sync?

I think my confusion stems from the terminology Sync/Anti-Sync. Does anti-sync mean the pump is running in reverse, or simply that as one speeds up the other slows down and vice versa? If its the latter case, "out of phase" seems a better description than "anti-sync"

-droog