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I have kept it high until 3 days ago. we have gotten a lot of rain the past two days.

When there is a lot of rain, that is a common time for algae to start for two reasons. 1. A lot of debris may fall or be blown into the pool
2. When it rains, many pool owners don't check their chlorine and as a result the cl drops too low and gives algae a chance to start.

Either way, you need to check and see if you're losing chlorine overnight that can't be attributed to the sun. If you are, then the answer is to continue holding it at shock level until you are no longer losing any chlorine to "stuff" in the water.


Janet

We had to drain water last night and it has stormed most of the night. I will drain and shock as soon as day breaks and keep it shocked until clear. I will post new numbers this afternoon.

.6 fc
.15 cc
8.0 ph
90 ta
350 ch
55 cya

Your Chlorine needs to be at an absolute minimum of 5 ppm unless you want algae to start growing--but because it's been low for a few days, especially with the rain in between, I think you probably already have algae blooming, which is why your pool isn't clear. Raise your chorine to shock level and hold it there to clear it up, until you're not losing chlorine overnight.


Janet

Test this morning:

65 FC
5 CC
7.2 PH
100 TA
360CH
55 CYA

Try those chlorine tests again. I seriously doubt that your FC is 65 and your CC is 5. Re-run those and then repost. Everything else looks ok.

If you are using a 25 ml sample size, you need to divide the number of drops by 5 (i.e. multiply by 0.2) to get FC and CC levels. If you are using a 10 ml sample size, you need to divide the number of drops by 2 (i.e. multiply by 0.5).

This morning after I ran the numbers, I went to the pool calculator and used it. I added 4 gallons of 6% bleach. My numbers right now are:

FC 15.5
CC 10
PH 7.2
TA 100
CH 360
CYA 55

Still cloudy as it has been since day 1 after shocking. Do I need to bring the FC to 20 and try holding it there?