If you either add the 6200.80 transformer or downsize to a 6100.70 drive unit it can be used as a stream. Adding a 6200.80 transformer will only boost the performance of a wavebox in the longest tanks where the pump has a longer run cycle. On a tank shorter than 6ft it is not worth doing. Really, unless your tank is 8ft plus the difference would not justify the expense, it would be less than a 1/4" gain.