Newbie question about FC in a SWG pool

[tcasto]

Happy Fourth of July! I was hoping for some confirmation that the pool is ok to swim in today.... I am new at this, have been reading Pool School and have started testing using a Taylor 2006. We did not use the pool in about 5 days due to rainy weather.

Here are the results of the tests from 5 days ago and today:

Test 5 days ago Today
FC 7.5 12
PH 7 7
TA 90 90
CH 170 150
CYA 95 90 - 95 (went down a little bit)


I checked out the Chlorine/CYA chart in Pool School and the chart does not go up high enough to account for a 90 - 95 CYA
My FC is much higher at 12 today - Is it ok to swim in? Is my Ph too low?
The solar cover was on for 5 days, I took it off this morning before I tested but it is not that sunny today.
Any thoughts? :?:

 

[Richard320]

Yes, that's below shock level, so it's safe to swim. When you have the pool covered, you don't lose any FC to sunlight, so you can turn down the SWG.

 

[Bluechip]

And get that ph up a bit to around 7.4-7.6.

 

[tcasto]

Thanks so much! I think I am starting to get the hang of this - I added a box of Borax last night after the fireworks .... and this morning the ph numbers are better. Supposed to be a hot one today in PA - so the pool is up and ready for action.

FC 10.5
PH 7.4
TA 90
CH 130
CYA 90 - 95

I noticed the CH level went down too? Is that a byproduct of the Borax or just a fluke test result? I have a vinyl liner so the CH is not a big concern.

Thanks again for the help and enjoy the weekend!

 

[RobbieH]

CH is probably the hardest test to get right. You really have to swirl like crazy. But, once you know where it is, you can ignore it for weeks. At most once a month is plenty to test CH.