CYA drops Ph--is this normal?

[samiguy]

Put 3 lbs. wallyworld (Aquachem) CYA in yesterday via sock hung from ladder. Almost all disolved in 24 hours (may have 2 oz. still in sock) and my Ph went from approx 7.7 to 7.2/7.1 in that time. Is this kind of drop normal/expected?
Don't think it's a problem.....just surprised how fast it disolved and the swing on Ph that wide.
As always, thanks for all the help!!

 

[Butterfly]

CYA is acidic and will lower pH. To learn how much, go to the PoolCalculator.com. Look near the bottom for "Effects of Adding Chemicals" and do the calcs with your pool's volume.

 

[Richard320]

Pool Calculator says 3 lbs of stabilizer will raise CYA by 22 and lower pH by .42

(It's down near the bottom where it says "effects of adding chemicals")

 

[BadOleRoss]

Yes, that is normal.

 

[samiguy]

Thanks Butterfly!! Duh...I keep finding out more that the pool-calc will do every time. Looks like it did EXACTLY what is expected.
THANKS!!!!!!!

 

[Butterfly]

Thanks Butterfly!! Duh...I keep finding out more that the pool-calc will do every time. Looks like it did EXACTLY what is expected.
THANKS!!!!!!!

you're welcome, and yes, the PoolCalculator rocks! Did you happen to notice that THREE of us responded to your post almost at the exact same time! dang, TFP is the Bomb!

 

[samiguy]

OH YEAH!!! You guys had an answer before I could even say THANK YOU!! This place ROCKS!! Best my pool has ever looked and my wallet is way fatter!! I can't say enough good things about you guys and the wonderful results!!
Again, MANY THANKS!!!!!