[Frankie]

I have about 33x turn over in my 120. I still look for more ways to get better flow. Wave boxes don't do diddily, power heads of any kind are ugly and closed loops are difficult to dial in. I have a closed loop on my tank and also use the returns for flow. I also use my overflow for rotation with great success. My tank is a turbulent roll over. When i built the tank itself i did so with the intention of using a surge tank. I have yet to build the surge tank but still plan on it. I have to say surge tanks are the way to go for an sps tank like mine. The crashing bubbling erratic motion is as close to nature as your going to get.