The tunze wont be enough flow by itself. The Tunze is extremely reliable - so adding a powerhead or two is a great option. I am not a fan of the Vortechs - except when they are working. It's been a few years since I've had one - maybe they made some quality improvements. I would go tunze all the way including their return pump. Ron - two vortechs and a wave box on a 90g? You Got Flow!! said:
Same stuff I had on the 130G, the 90G is just temporary. Just bought a marineland starphire 150G deep dimension's cube, I may sell my two MP40's and two MP20's and get two MP60's to go with the nano wavebox. [smilie=lol.gif]