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
black spots after shock
- Thread starter Kostya7
- Start date
- Jun 22, 2014
- 47,751
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
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.
This info will help get us started.
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.
This info will help get us started.
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