Bleach loses strength as it ages or if it has been stored in the heat. Your grocery store bleach may have been fresher or stored under better conditions than the 10% you bought earlier. There is usually a date code stamped on bottles of chlorine and you can look up the code for any brand on your phone while in the store so you can buy the freshest chlorine available. Codes are slightly different for each manufacturer.
Sorry I did do that one as well came up 20 cya went and bought another 4lbs so I figured I'd get it going 2morrow with about 2lbs in a sock to start with and retest
Kk folks cya is in the sock (first 2lbs) and then retest to see where I'm at, hopefully adding the cya slows the rate of which I'm adding bleach? on the other hand my pool is sparkling again, will post pics here in a bit
Woo hoo after the sock full of cya desolved I retested and got 30 cya level, super excited bout that, how long should I wait before adding some more (a day, a week or so?)
A cya of 30 is perfect for a slam. Test fc and add bleach to keep fc at slam levels several times a day. Brush daily and backwash only when your pressure rises 25% above your clean preasure. Check the chlorine cya chart in my signature. Let us know if you have any questions.
It can take up to a week for all the CYA to fully dissolve and show up in the test. If you were adding it yesterday it's best to give it a few days and then retest again before deciding if and or how much to add.
It's easy to add to much and troublesome to drain and refill to lower.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!