White/clear sediment in Polaris bag..what is this?

A

Adhawley79

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Aug 18, 2016

6

McKinney, Texas

• Jun 5, 2018

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• #1

What could this be? It’s collecting in my polaris bag. It feels like sand, but looks like rock salt, but doesn’t break down or dissolve. Any advice?

 

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YippeeSkippy

Mod Squad

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Jan 17, 2012

21,218

Evans, Georgia

• Jun 5, 2018

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• #2

Put some on the dirt and pour a tiny bit of muriatic acid on it. If it bubbles like crazy, it is calcium.

Maddie :flower;

 

A

Adhawley79

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Aug 18, 2016

6

McKinney, Texas

• Jun 5, 2018

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• #3

I poured MA on some it and there is no bubbling.....

 

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Adhawley79

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Aug 18, 2016

6

McKinney, Texas

• Jun 5, 2018

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• #4

Water looks clear and feels soft. I shocked today with 48% Cal-Hypo. I’m going back to liquid chlorine looking forward.
FC: 10
CC: 0
pH: 7.8 (May be a little high since I added borates 7 days ago as well as my PVC chiller fountains)
TA: 130
CH: 400
CYA: 90
Borates: 50