An artist I am not, so hold you laughs for later... This is my thought, I will put 4 Tunzes in, two of them in the island and two against the back wall (all in the Tunze ceramic rocks) all aimed in suck a way as to give me a directional flow. Later on (if the 30000 Gph flow I will have isn't enough) I can add 4 more facing the opposite direction giving me the alternating currents.
