Unfortunately I don't have a recirc line on this reactor.
Anyhow I did blow some air in. Had to open my valve and reset it afterwards. But it did show the pump is running.
Tomorrow is day 28 -- four weeks and counting. Nitrates still off the chart, nitrites still off the chart. I'm about ready to give up. I don't see any downward trend in the numbers. I don't see how reeferaddict could have such profound results in a month.
Should have gone zeovit when I had the chance. My poor tank.
I suggest to anyone reading this, don't bother with sulfur denitrators, unless you're willing to wait 15 years to see results. At least for me it's just like the Calfo DSB in a bucket idea. .. it just doesn't work.