No problem. Your tank is looking kick a**!
LOL, I meant "Nick" Sorry
That's what I am doing with the pumps. As you mentioned a narrower tank is a bit trickier but I got it to work. I have the Tunzes pointing out towards the sides of the tank so I can achieve the same return flow in the middle like in your graph.
Just wanted to see if you found a better way of doing it. Thanks for the reply