What is this? Wrinkly discolored area in liner

[mccusaf]

Good morning,

DH and I are potentially looking at a new house with an in ground pool. I'm going on my third summer with an AG 15 x 30 pool so I'm feeling pretty confident that I can handle this in ground with the BBB method, it hasn't failed me yet so far!

The pool is a typical 20x40 liner pool, 3 ft on the shallow, 8 ft or so on the deep end, the typical pool you will find at most houses. The water is nice and clear and they have the pump running 24/7 right now (the house is already empty) and everything looks like it is in decent condition but I saw a weird stain in the liner.

Attached is an image. Its a slightly discolored section and the liner is very wrinkly there, any idea what it is?

(The darker blue spots are just a shadow from a tree, it was about 8 in the morning when I was out there taking pictures. The spot is in the center of the image)

 

[JohnT]

Just a guess, but possibly someplace chemicals have been dumped in and rested on the bottom. Is it at the bottom of the sloped wall?

 

[mccusaf]

No this is the shallow three foot section. If we decide to do a proper walk through I will have to inspect it more carefully and ask about it. Will try to get better pics too! I think that might be a good guess, maybe they had powdered bleach or something there and let it sit too long.

 

[frustratedpoolmom]

Happened in a poorly maintained pool to someone I know, twice. The liner is brittle there and will probably end up leaking at somepoint. I would request a credit for a new liner PLUS install.