Hello Michael . . .
Our bio-filtration is outstanding and has, I'm sure, lots of additional carrying capacity. But it's all submerged media (Ultima II filters followed by upflow J-mat chambers).
Our vortex is undersized due to space considerations and the Cetus sieve should more than make up for that defect.
As far as the Clarity unit, we believe its trickle tower component will lower nitrates (from 7 winter/10 summer) to close to zero -- and its foam fractionator component will eliminate the last trace of DOC's from the waterfalls.
Or at least that's the plan.
