Which Wavebox? (Or Vortech)

[Mrfish55]

The intensity and duration of the wave is adjustable, on a 6' tank you can actually achieve a double wave which would probably work better with your overflow, I think the nano would be too small, if you go with the wavebox in a tank that size go with the full size unit. It wont matter which end you mount it on, you may be able to mount it to your overflow to help blend it in also.