Ph 6.6 Alkalinity 50 HELP

[aylad]

To bring the combined chlorine down, you need to shock the pool. With a CYA of 100, that means bringing the chlorine level up to 25 ppm. I'm assuming that you're using trichlor tabs for chlorination, which will drive your CYA up and your pH down. If so, I recommend that you stop using the tabs because you're going to fight a battle for the rest of the summer to keep your pool clear. Ideally your CYA should be around 40. Your pH needs to be at least 7.0 to prevent damage to your liner from acidic water. YOu can raise it by adding more Borax.


Janet

[CarlD]

Since your Total Alkalinity is so low (50), instead of Borax you can use Arm&Hammer WASHING Soda, in the yellow box. This will raise both your Alkalinity level AND your pH. I suggest dumping a whole box in to start, and plan on dumping in another within 24 hours--but test it in between.