Cyanuric Acid

[Sue225]

my kids and grandkids will be here this weekend. Forecast is for 90 degrees.
they will want to swim. I have the chlorine at about 10-12. Could I keep it there until Sunday and shock at that time? Is it safe for kids to swim in water with that high of a chlorine reading? It scares me to allow little kids to swim in that amount of chlorine but
i suppose public pools keep their reading high also. Any thoughts? You guys r the best!
American Sales had liquid chlorine 4 gal for 9.97. Cheaper than Walmart bleach considering American Sales shock is 12%. Aldi has 6% bleach 1.07 for 3 qts. Yes, I went to Walmart before I read your post and did not buy the 5 way test. I will get one tomorrow!!

[Watermom]

You can wait until Sunday to shock the pool but ..... if there does happen to be an algae bloom in the works due to your chlorine level dipping so low, your water won't be sanitized. Why don't you do this. Test early in the morning before the sun really gets on the pool. If you have lost more than 1ppm of chlorine overnight from where you are now, you will know that there is something going on with your water and you need to shock. You don't want kids swimming in water that is unsafe. If, there is not more than 1ppm loss overnight, then add enough bleach in the morning to take the chlorine back up to around 12 and let the kids swim. Take a look at the chart at the following link.

http://www.poolforum.com/pf2/faq.php...aq_bg_chlorine

Swimming in a pool with cya of 110 and cl of 15 is no more "dangerous" than swimming in a pool with a cya of 40 and cl of 6.

[Sue225]

got the kit from walmart and ready to shock the pool. Howdo i tell what the chlorine is now. The kit shows 6-8 but the strip show about 3?? Foes the 5 way kit show fc or cc?
PH is Ok, about 7.5 alk is 110-120. I plan to dump 3 1/2 gal of 12%. hows that sound?

[Watermom]

Sounds like a good amount. Add it tonight after the sun is off the pool. Then, test it again early tomorrow morning before the sun really gets on the pool and see how much cl you are losing overnight. If you are losing more than 1ppm, do it again. Try and test/redose at least twice (and more than that is even better) per day until you don't lose more than 1ppm overnight.

Trust the kit over the strips. I think the 5-way kit tests TC. I haven't used one in a long time. Check the instructions.

[Sue225]

If I want to see if chlorine is 25 do i do 1 part pool water and 5 parts distilled water since the test only goes to 5?

[chem geek]

If you mix 1 part pool water with 9 parts distilled or filtered water (water that has no chlorine in it) then you would multiply your reading by 10.

With 1 part pool water and 5 parts distilled or filtered water, you would multiply your reading by 6 (1 part + 5 parts = 6 total parts so 1 out of 6 is your pool water).

[Sue225]

Well i went to ps this am to check chlorine level it was 15 after 3 gal 12%. I added 2 more gal to get to 25! Problem is that it is impossible to measure accurately chlorine level w/o proper test kit and mine has not arrived yet. Strangest thing CYA has been around 100 now the clerk tells me it is 32 in 2 days!! The 5 way test is still telling me cya level is around 100. So, i am just ignoring the clerk, as a matter of fact, i am not going to that store again! Pool is still beautiful, lets see if it holds chlorine! on 6/8 cya was 30 i added the mustard algae junk at that time and within the week it was over the top. 110 with a 1/2 pool refill. Frustrated beyond words. brownish pools of fluffy stuff are still on the bottom of pool. We are vacuuming to grass daily, seems a little better. They seem to settle in foorprints and other indentures in liner. I can't remember my name some days let alone the shade of yellow/orange the shot glass method shows. We guys are the best and i look forward to a lasting relationship with you As soon as this pool reaches the point where is holds chlorine i am switching to 6% bleach.