Good Afternoon please take a look and let me know your thoughts. 4 year old concrete wall, vinyl liner saltwater pool.
I noticed these 2 spots or areas last year and after opening the pool a few days ago, they are getting larger. 1st 2 pics size is approx 6" length and 3rd pic is approx 3" length. Spots are on same side of pool but 8-10 feet apart and are where the vertical wall meets the bottom drop off to the deep end.
I have submitted pics to pool builder and liner manufacturer and am awaiting a response.
Anytime I add ph up or stabilizer, I follow directions by placing in the 2 skimmers or diluting and broadcasting around the perimeter of the pool.
I have never just poured anything into 1 spot repeatedly(which pool builder asked me). Also it was mentioned that numerous vinyl pieces are affected where the seams meet.
Thanks in advance for your thoughts!