I brought it down to 1.009 and monitored almost everyday using a refractometer. They looked fine for 5 weeks before I started raising the SG
. I was convinced the ich has died, but for some unknown reason it started to come back. I am not quite sure what has gone wrong though.
Having just used Cupramine, I would still go back to hypo treatment next time to give it another try because it was definitely less stressful for my fish. Also it does not kill off the beneficial bacteria which would mean less frequent water changes.