Calcium marks around the pool and at the bottom

CatalanBull

Bronze Supporter
Apr 3, 2025
25
Corona, CA
Pool Size
13500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Hi,

Is there a way to get rid of these calcium marks around the pool and spa? Also, I have these white spots at the bottom, I don't know if it's calcium as well or something else. Any advice how to get rid of them? I started taking care of my pool in the last two weeks, I'm not sure if this is the product of something my pool guy used to put in or if it's normal wear and tear.

Thanks!
Roger

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I just tested the water, these are my numbers:

FC: 4
CC: 0
PH: 7.8
TA: 80
CYA: 60
CH: 350
Salt: 3370
CSI: -0.13

When I took over taking care of the pool I replaced about 85% of the water. Hopefully keeping these numbers will help not add more scaling and calcium buildup to the sides.

Thank you!
Roger