Water Turns Green When Shocking

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.
KenK
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Joined: Tue 19 Mar, 2019 13:31
My Pool: 21' x 10' gallon fiberglass pool, approximately 6,000 gallons, chlorine, cartridge filter.

Water Turns Green When Shocking

Postby KenK » Mon 20 Apr, 2020 16:37

I've had this "problem" for well over a year. Whenever I add shock to my pool the water turns bright green, then disappears after about 10-15 minutes. Today my alkalinity was low, so about 10 minutes after I added the shock I dumped in some alkalinity increaser, and the green water cleared up immediately.

Any ideas as to what's causing this?


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