Use straight liquid chlorine or bleach to bring you up to "shock" level according to the best-guess chart and keep it there until you can pass an overnight test. Make sense?
Use straight liquid chlorine or bleach to bring you up to "shock" level according to the best-guess chart and keep it there until you can pass an overnight test. Make sense?
26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO
Ok, so shock it tonight to bring Cl level up, that is what I thought...should I worry about Cyanuride level going up ??
Would 90 appear to be a good level for stabilization
The pucks have given you a lot of CYA. 90 is very high. Your shock level is 20-22ppm FC. http://www.poolsolutions.com/gd/best...e-chart.html#a
Use bleach or liquid chlorine rather than bagged shock as that will not raise your CYA level.
Have you considered doing a partial drain and refill of the pool to lower your CYA?
26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO
To be honest with you, I have not used the pucks that often this year, maybe twice a week, if that...I will use the liquid shock tonight, think I should switch to the granular HTH, I have some of that left ??
With a week of 90 degree weather and sun all week, think that will lower my CYA ?
Your CYA will only lower significantly through dilution and occasionally over the winter.
What is in the HTH granular? Is there cyanuric acid? Does it say Tri-Chlor or Di-Chlor? Both of those will raise your CYA higher.
26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO
I am going to shock it tonight..The liuquid shock I have is Sodium hypochlorite 12.5%...will this raise my CYA level, or can I use it
That is perfect! That is liquid chlorine with NO CYA. Remember, you need to get the FC up to about 22ppm and keep it there by testing and adding until you pass the overnight test.
26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO
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