[Pescador]

I'm running the same reactor, what is your effluent flow?
Mine is on the high side I think about 200ml/min. Co2 is about 60bpm.
PH in the reactor is about 6.8. My Aquamedic regulator is preset at about 18-20psi. I open the needle valve on the reg to get a steady flow and fine tune it with a Redsea needle valve.
I'm pretty impressed with the larger media it's only gone down about an inch in 2 months I would have used 1/2 a chamber of the fine stuff in my K2R.