What is this yellow ring and how do I fix it?

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megcberry

megcberry

Member
Mar 27, 2021
5
Glasgow, KY
Pool Size
18000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Hayward Turbo Cell (T-CELL-5)
Hi! 1st season pool owner here! Pool company opened her up this year, shocked her a lot, then claimed the “yellow ring” will go away and the water will clear up in a few days....it’s been 2 days, water isn’t clear and a yellow ring is still visible. I tested the water and am waiting on the necessary chemicals to get levels to where it needs but I am concerned that the yellow ring at the water line has stained the white fiber glass. Any insight will be greatly appreciated!! Photo for reference
 

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Welcome to TFP.

What test kit did you use to test the water?

What chemicals are you waiting for?

I doubt the yellow ring is permanent. Chances are it is from algae in your water.

We deal with algae with the SLAM Process

I suggest you read ABCs of Pool Water Chemistry

 
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I see no need for soda ash or calcium chloride based on your PoolMath logs.

You need more FC. Add 5 ppm of liquid chlorine daily until you get your TF-100.

When you get your TF-100 post a full set of test results...

FC
CC
pH
TA
CH
CYA
 
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