Changing your carbon blocks to early? Check them! | How to Tuesday
The best way to know when to change your carbon blocks is to test the water. To test them:
1. Obtain a sample of water to test by either disconnecting the tube coming out of the last carbon block or by getting a sample of your waste water.
2. Test the water for total chlorine with either simple test strips or a chlorine checker.
3. If you detect chlorine, change your carbon blocks.
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