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Gunite pool and just opened it for 3rd season A noticeable and rough sandpaper-like surface formed on the sides and bottom of the pool where waterline was in winter what caused and how to fix?

Answer

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May 01, 2009 5:03PM

Poor water chemistry. Ph and or total alkalinity were not maintained. You have calcium deposits or scale as it is sometimes called. Possibly a light acid wash at the start of the season done by a professional.