According to my math 3 days and 2:55 or 74.55 hours total to match your first run. Not sure what that it means but your rinse looks close from the first test so far in ammonia depleted. Has no2 and no3 been giving you similar results from first test?
It does look like your rocks went back to original capacity from wend they were removed from the sump.
Well NO2 never read anything really. I didn't take N03 last night. But I did at 24 and 31 hours. And it was very close to the first run.
It does seem that I went back to what I originally had or very close at this point.