Discoloration in neighbors pool

houstonnewb

Silver Supporter
Feb 1, 2022
22
Houston, TX
Hello,

I'm posting this on behalf of my neighbor. She is experiencing brownish spots all over the pool that will not brush off. She tried shocking her pool which didn't do anything to help. I don't have her chemistry parameters handy. Does anyone have any thoughts what may be causing this and any steps she can make to resolve the issue? Thanks!
 

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Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
35,945
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
Could be a variety of things, and as you said, without test results and history a bit of guesswork. Could be calcium staining, or organic material embedded in calcium. Spots could be tested with a Vitamin C tablet for iron. Rub a chorine tablet on them to see if it's organic. If they used copper products from the pool store if could be copper.