Frustrated

[CarlD]

OK:

With your CYA you need to shock to 20ppm, and maintain your water at 5-10ppm--you are at the bottom of that.

Don't add Borax--your pH is 7.4 and that's perfect.

What is "Granulite" chlorine? Is it Cal-Hypo or Di-Chlor? The former could WELL leave white crystals that take a long time to dissolve. The latter adds CYA and you have more than enough.

Stick with bleach/Liquid Chlorine. Do not add anything else--your numbers are FINE!

[staclear]

Thanks Carl for quick reply. I'm using HTH Cal- Hypo. If the numbers are fine than why the water is still murky?. How many gallon of bleach i need to bring up the level to 10 ppm?

[CarlD]

Is it milky or murky? There's a big difference. Milky is due to suspended particles. Cal-Hypo is notorious for causing that. It actually should not affect the swim-ability of the water.

But if it's murky you are fighting something and you need to shock your pool as specified.

If it's milky, try using skimmer socks and adding some PolyQuat which can act as a clarifier as well as an algaecide.