I've been using the HTH 5 way test kit all season without a glitch so I figure why fix something that isn't broken...but I just went out and tested tonight only to see some really strange results! the chlorine side was yellow with the first couple of drops but by the 5th it had turned an ugly rusty red. the PH side seems to be reading 6.8, BUT it was 7.2 2 days ago and I added borax to raise it a bit because I also shocked the pool that day (day before yesterday)
what the heck does a red chl result mean??