Good morning. After adding a pool shock black spots are appearing on the pool floor. after 10-15 min of water circulation they disappearing. What is this and how to fight this problem
Welcome! In many cases, discoloring immediately after the introduction of adding chlorine is a reaction with metals in the water (i.e. iron or copper). Please answer the following to help:
- How are you testing your water?
- Can you post a full set of test results?
- Are you on a well?
- How do you normally chlorinate your water each day?
- Update your signature with all of your pool and equipment info. Include the test kit and type of pool.
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