white spots on vinyl liner

[PLiebing]

a gray line appeared only on one end of the shallow end, this line started to disappear but now it is starting to turn white? it is above the water line. can anyone tell me what this is and how to get rid of it?

PH 7.6
FC 3
CC 1
TC 4
CH 350
TA 80
CYA 60
salt 4000ppm

 

[borjis]

Is it rough or smooth?

 

[PLiebing]

it feels rough

 

[PLiebing]

it is rough

 

[pooldv]

Sounds like calcium scale. Enter all your test results in Pool math and it will calculate your CSI. Keep it negative -0.3 to 0. Tweak PH and/or TA.

More here, Pool School - Calcium Scaling

 

[PLiebing]

would Calcium scaling remove the color from the liner?

 

[camueller]

Does calcium scale happen on vinyl? I was under the impression it didn't stick to vinyl.

 

[pooldv]

I don't know if scale can remove color, it doesn't seem like it should. Yes, scale can definitely stick to a vinyl liner.

 

[PLiebing]

what can i use to try and remove it?

 

[pooldv]

There a couple of options in the link I provided. You can also put dry acid in a sock for isolated spots.

 

[PLiebing]

my pool installer thinks it is a defect in the liner itself, which has caused it to loss its clear finish over the print. sending pics to the manufacturer to see if warranty will cover it. pool is not yet 2 years old.