Just to clarify, I used 1 ml of white vinegar to 10 Litres water, that coped with a comparable bioload.
Obviously a 50% water change would get rid of 50% of any problem, given correct salinity and temperature. At your current readings your well into the “Action Required” quick smart zone.
Bubbler not required then, pH maybe already set, depending on your atmospheric CO2. Vinegar obviously reduces the pH a little. I’m assuming NOPOX is a vodka / sugar / vinegar equivalent.
Obviously a 50% water change would get rid of 50% of any problem, given correct salinity and temperature. At your current readings your well into the “Action Required” quick smart zone.