CYA is below 20....Am I reading it right???


May 18, 2010
OK I have a TF 100 and while testing the CYA I am looking directly down the tube, I cannot make the black dot dissappear. I just want to make sure I am looking at it right before I start adding stuff. Also while im here, my readings.....

Ph 7.5
Chlorine 1 ppm
TA 80

I plan on adding liquid bleach using the pool calculators recommendations and water conditioner for my CYA. Does this sound right?? Or will the bleach raise my CYA also???


TFP Expert
LifeTime Supporter
Feb 23, 2008
Denton, TX
Sounds like you have no CYA.

Use the pool calc to find your CYA dose and add that amount. Bleach will not add CYA.

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