I cleaned the water line a few days ago and it was fine for 3 or 4 days and then it's acting weird again! There is enough reagent for another month of testing ! PleaseAlso, make sure your water feed line isn't obstructed with algae and debris.
Help.. also test a failed again just now. I have cleaned the water line about 5 days ago
Also, make sure your water feed line isn't obstructed with algae and debris.