Tunze powerhead and controller settings?

[RuGlu6]

I also have Tunze multi controller and i set my pumps in such way that one piks up the flow from another and second one pointing toward surface.
then repeat. In this way flow is much greater then every pump just blows in what ever direction.
So detritus is mostly suspended and skimmed .
But try to play and see when dirt is ending up at the spot that is easier to clean.