Incorrect chlorine levels

Does your pool have a heavy chlorine odor? There could be too much Total Chlorine (TC) and not enough Free Available Chlorine (FAC). We've got the solution.

<strong>Incorrect chlorine</strong> levels

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The problem

If you've added sanitizer or shock and still can't get a reading, or your favorite swimsuit shows signs of bleaching, the problem may be too much Free Available Chlorine (FAC).

Recommended Solutions

- For high Total Chlorine (TC): Shock treat the pool using an HTH™ shock product. For additional help, contact one of our HTH® pool care experts.

- For high Free Available Chlorine (FAC): Stop adding chlorine. Allow the FAC levels to decrease to 1-4 ppm. For additional help contact one of our HTH™  pool care experts.

Preventative maintenance

- Verify pool volume and use the correct product dosage.

- Test FAC and maintain 1-4 ppm.

- Shock treat the pool weekly and after heavy rains or heavy bather loads.

As always, we’re here to help. If you have questions, contact our help line at 1-866-HTH-POOL or talk to our experts with our live chat!


Please read the following important reminders before adding pool chemicals to water:

• NEVER mix products together or dissolve before use.

• ONLY enter pool when FAC levels are below 4 ppm to prevent risk of bodily harm.