I just tested my water tonight and noticed I had no FC. Last week when I added bleach it was at 5 and today it is at zero. I wanted to know how long does chlorine last. We did have some hot days followed by some rain yesterday. But I wouldn't have expected it drop so fast in a matter of days. I did add 1 gallon of bleach tonight and will add some more tomorrow per the pool math calculator. I don't think I have an algae problem since the water was clear and didn't notice any algae. However after the rain yesterday my pool did turn cloudy. Would appreciate any advice.
My readings are.
TA - 150
CH - 300
CYA - 70-80 Ive gotten different results each time I do this test. I'm going to my local pool store to try and get a more accurate reading
For my tests I've been using the taylor k-2006 with the fas-dpd