Discoloration in middle of pool

[huff515]

Hello -
Would anybody know why the middle of my pool is a difference color? I am at the end of a SLAM so I do not have accurate test results yet, but even when my water is balanced it does not change (using TF-100 test kit). It has been like this for a couple years. Just wondering if anything can be done or if it is what it is and I have to live with it.
Thanks, Gina

 

[Texas Splash]

Welcome to TFP! I recall seeing something like this before, but I can't quite recall what was responsible. Either something different under the liner or something in the liner itself.

 

[Mdragger88]

Its likely because a different batch of vinyl that was used for that piece (I assume there are seams there?) so they are fading differently in the sun. There’s not really anything u can do about it besides replace the liner.

 

[huff515]

Thank you! I can live with it, I was just curious.

 

[Mdragger88]

Btw - that is one of my fave liners! Love the mosaics