I will be moving from a 55 gallon tank with 2 HOB Topfin-75 filters to a 180 gallon tank with a Fluval FX6 Canister Filter. I am trying to determine if the Fluval FX6 will produce enough current for my Bala Sharks. If I install the intake and output hoses on opposite ends of the tank, will I need additional circulation? If it is determine that I will need additional circulation, I will set up the "Hillstream Build River-Tank Manifold System. Thanks for all comments, pro and con.