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Continuing along with this Tank Turnover Rate paradox, & something that directly affects this.
I don’t believe that increasing the rate of flow over the screen of a down flow scrubber, above the minimum
required to completely immerse the algae and stop water channelling, will increase the fraction of inorganics
removed by the algae with each tank turnover.
The algae can only remove a fraction of the inorganics available in the water passing over it, and I can't see
any reason why a faster flow should change the value of this fraction.
In regards to the important water - air interface created by the thin layer of water flowing down over the algae
in a downflow scrubber, a quicker flow would increase the thickness of the layer.
Perhaps I'm wrong?
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