Nice i like the tunze, but i didnt want all the powerheads in my tank so thats why i went with the vortechs, plus i love the fact that i can pick and choose what mode to put them in. I think right now in my tank i have close to 5,000 gph or so in my tank with just 2 powerheads and my return. Good luck its lookin good so far, just make sure you keep your levels stable and good.