Uneven Carbonation & other Plaster Discoloration | Calcium Issues, pt. 5

Previous Episode: Calcite Crystals | Calcium Issues, pt. 4

Next Episode: Organic Staining and Tannins

00:00 - Intro

01:49 - Most people mistake this problem for scale. But it's not scale.

05:05 - This is a chemistry issue, not specific to brand of finish or pigment. This is not a cement or pigment failure, it's a water chemistry problem that can be prevented.

06:01 - How this occurs during plaster application, exposure and startup.

15:36 - How this occurs months or years later, from aggressive water over time.

21:04 - When we get calls about these issues, the answer is not always good news. We are not in the business of pointing fingers at who caused what.

25:45 - Two causes of etching: not diluting acid, and using trichlor feeders, especially on pools with auto covers.

28:35 - Summary. Thanks for listening!

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