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Copper Electrodes Coated In Blue Green Film

Q - Why are my copper electrodes coated with a blue green film?  I clean them and the blue film returns in a about two weeks. The pool water is clear - ph is 6.8-7.0

A - A blue, green, or blue[green coating on the copper electrodes and/or chamber is normal and doesn't affect the operation of the system. is normal.  

Keep the chamber and electrodes working at their optimum with the recommended maintenance schedule to keep everything running smoothly.

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