I need to drop the current of my tank down a bit, so i'm looking to get a spraybar, and mount it 1/2 way along my tank, going to the rhs of the tank, and on the lhs the filter intake.  Will this give 1/2 the tank high water movement, and 1/2 slower movement? 
 
 
- trying to get the pantadon outta the corners of the tank  
 
Or, putting the spraybar a fair way below the surface of the water, and putting it on the RHS of the tank, input on the lhs.  If i do this, and therefore decrease the surace agitation, will I also need to put in an airline / bubble wall? (tank is planted). 
 
 
Thanks.