What is the relationship between pH and chlorine?

PSC Ep. 87: What is the relationship between pH and chlorine?

7 thoughts on “PSC Ep. 87: What is the relationship between pH and chlorine?

    1. First thought, add chlorine. Check your CYA level, to make sure your CYA is between 30 to 60. When the CYA is in that range, add shock and supplement with chlorine tabs or bleach.

  1. Yesterday, we did step 4, after trying all the steps so far. Our water is clear, but we are still getting a reading of TC 1 and FC of 0, all are other readings are in the normal range. We followed your formula for step 4 and, the only difference is we had was that our ph was 7.5 and Step 4 said a high of 7.4. Unfortunately this morning after putting in the amount of calcium hypochlorite calculated, which amounted to 15 bags, our reading was TC 1 and FC 0. Our water is still clear, and we can definitely smell the chlorine. The only thing that has changed in the management of our pool is that we have a whole new pump, filter, skimmer that the manufacturer replaced for us. We also purchased a new testing kit when we kept getting these readings. Both kits are still reading the same. Any suggestions? Thanks in advance for your help.

    1. First, I would check the CYA levels to make sure stabilizer levels are between 30 and 60. Once they are in the right range, try adding the cal-hypo shock at night. Adding the shock at night allows it to work without being depleted by burnoff by the sun.

      1. Hi Matthew,

        Thank you for your response to my posting. Our CYA was and still is 30, and we put the 15 lbs in at night at 11:00 pm and left the filter running. We took the reading of TC 1, FC 0, and CYA 30 at 6 am before the sun was on the pool. Any other suggestions.?

        All the best,

        Laura

        PS. As suggested in step 2, we replaced 1/2 the water in the pool.

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