Light Area Vinyl Liner Need Help

[aterri]

The baking sofa was put in the pool 4 hours before.

The shock, 3 bags, of hth super extra shock 454g, was put one at a time. Half in the deep end in front of the return jet (5.5 feet) and other half 3.5 feet in front of the jet. I did not mix the shock in water before. I am unsure if it went directly on the liner.

A few weeks ago I did an oxidizer pool clarifier and that it went on the liner.

I am confused what exactly happend.

Did any of this make a hole in the liner?

It’s faded where it is. I’m unsure if it is chemical or calcium. When I pass my hand over it it’s rough like a low grit sand paper.

 

[5odaw1s]

Except for the “Did any of this make a hole in the liner?” part, all of this is moot now. I get that you’re just trying to understand what happened. And we’ve explained it as well as we can with the information in front of us.
As Manaus said, if it’s calcium you ought to be able to scrape it off with a thumb nail.
If it’s the cal hypo granules that bleached the liner we could get father into the weeds trying to understand. For example, looking back at the pictures you posted, it appears that the light area is a little father back towards the steps than the return jet. We could get into the rate that the shock was added i.e. did it barely trickle from the bag, of did it get poured from the bag at a normal rate or was it dumped in?
But if you are unable to scrape the white off with a thumb nail, since the bleached area is in the shallow end where chlorine granules were added, my money is on the cal hypo bleaching the liner.

As for the oxidizer clarifier, I’ve never heard of an oxidizer clarifier.
An oxidizer sanitizers the water, like chlorine, cal hypo, Dichlor, tricolor etc.
A clarifier causes particles too small for the filter to filter out to clumps together into particles large enough for the filter to remove.
All clarifier bottles that I’ve ever seen have directions that tell you to put x ounces of the product per x gallons of water in the pool (usually x ounces per 5000 gallons) into a bucket full of water, throughly mix and slowly pour around the perimeter of the pool.
So if you poured the clarifier directly into the pool at precisely that spot it could have made it to the liner. But I don’t have a clue as to how it might affect the design on the liner.

As for a hole in the liner, you can take some food coloring and put it into a small squeeze bottle. Then, with the pump off and the water still, put the bottle about 1/2 - 1 inch above the liner at that spot and squeeze out some dye. If there is a hole in the liner the dye will be immediately sucked through it.

 

[aterri]

If there is no hole in the liner it is just cosmetic? Anything else to worry about?
Would the vinyl eventually blend in?

 

[5odaw1s]

If there is no hole in the liner it is just cosmetic?

Yes. And FYI, I’ve never seen or heard of chlorine granules contacting a liner eat through a 28 or 25 or even a 20 mil liner.

Anything else to worry about?

Not worry, but going forward I would be mindful of how I added chemicals to the pool water.
You also might want to read the information in Pool School section of the site, especially ABCs of Pool Water Chemistry.
And I know because you’re located in Canada it might be difficult to acquire a quality test kit but you should try. See Test Kits Compared
I would also consider changing the sanitizer to liquid chlorine. Liquid pool chlorine if you can find it. Or regular household bleach if you can’t. Just make sure it’s plain regular bleach and the container doesn’t say things like splashless or scented or colormax(like Clorox bleach says).

Would the vinyl eventually blend in?

If they last long enough and are in the sun, all liners eventually bleach out.

 

[aterri]

Thank you all. You all been very helpful.