Tested after cleaning
5G bucket test:
Without media - 1:44 seconds to fill (to the internal line) = 173 GPH
With media (Biofoam, 2 trays of Matrix, polishing pads) - 1:53seconds to fill = 159 GPH
The bucket edge was about 6 below the position of the filter output on the tank so the tank numbers will be a little less.
I should have done the test before I cleaned
I'll am going to do this again in a few weeks when it's dirty and I add the Purigen packs back... Ugh