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It is currently May 19th, 2013, 6:40 pm
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jeremydu
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Post subject: Zero CYA  Posted: April 28th, 2009, 7:38 pm |
Joined: June 24th, 2008, 9:06 pm
Posts: 40
Location: MOBILE, AL
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On the pool calculator it states Be careful if your CYA is really and truly zero in the suggested FC area. Why does that matter when adding bleach. Over the winter all I did was added bleach here and there not bothering with CYA but now it is warming up I checked my CYA and it is Zero. I forgot and added 182 ounces of 6% earlier befor adding CYA. Did I do something bad?
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24' AG, 52" wall, 1Hp pentair pump with sand dollar sand filter. ex-frog owner. BBB all the way.
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JasonLion
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Post subject: Re: Zero CYA Posted: April 28th, 2009, 7:42 pm |
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Joined: May 7th, 2007, 3:03 pm
Posts: 28033
Location: Silver Spring, MD
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If you have ever added any CYA before, your CYA level will not be really and truly zero. The only time CYA is really and truly zero is right after it is filled and in indoor pools that have never used CYA.
When CYA is really and truly zero, you don't normally want to raise the FC level above 5 even when shocking (thought there are a few exceptions).
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19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
TFP Admin. Creator of The Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School
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jeremydu
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Post subject: Re: Zero CYA Posted: April 28th, 2009, 7:55 pm |
Joined: June 24th, 2008, 9:06 pm
Posts: 40
Location: MOBILE, AL
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Alright thanks for clearing that up.
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24' AG, 52" wall, 1Hp pentair pump with sand dollar sand filter. ex-frog owner. BBB all the way.
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