Alkalinity

[cledee]

Does dry stabilizer or Trichlor lower Alkalinity?

I got 60ppm Alkalinity 2 weeks in a row and this week I got 50ppm. I increased Stabilizer by using some Trichlor and adding dry stabilizer. I tested twice just to make sure I didn't make a mistake.

 

[Donldson]

Trichlor is highly acidic and will lower pH and reduce TA. CYA is a much weaker acid than trichlor so it will not affect it as much.

 

[cledee]

Trichlor is highly acidic and will lower pH and reduce TA. CYA is a much weaker acid than trichlor so it will not affect it as much.

Thank you very much. Do you know how much Trichlor affects Alkalinity? I didn't see it on Pool Math under the effects of adding.

 

[Donldson]

Alkalinity is difficult to predict how much it will drop, but any time you lower the pH the alkalinity level will drop.

 

[cledee]

Alkalinity is difficult to predict how much it will drop, but any time you lower the pH the alkalinity level will drop.

Thank you, that makes sense. I shouldn't have any more drops since the dry stabilizer and Trichlor are fully dissolved and I'm at my ideal levels for CYA. I just added a little baking soda to increase alkalinity back to about 60ppm.