I'm new here and have yet another question. I started another thread about my success? with clearing up algae using BBB and of course found myself to be such an expert that I've taken on a friends pool too to help them clear the same sort of algae mess we had (I'm kidding on the expert part)
So when I tested their water for them last night their chlorine was off the chart for my test kit as it had just been shocked. PH 7.6 but the question comes with the TA. With my test kit I titrate until it goes from blue/green to red (just in case this isn't the case with all). When I tried to test their's, the sample instead turned yellow at about 140 and never left that yellow colour when I added another 7 drops. Hoping that someone here can clue me in on what this indicates. Their pool is 90000L vinly with sand filter.
Thanks again...so glad to have found you all.