Hi guys new to the forum been looking for awhile and appreciate all you guys have taught me. First time pool using bbb method this whole season. Its been very easy to maintain and upkeep my pool. I have yellowish stain that keep coming back on the seam of my deep end where it transitions from shallow to deep end. Its in the crease and doesn't clean with brush but if I go in and scrub with scrubber it goes away for couple days and comes back. Its a old vinyl liner that's going to be changed in next couple years. Not a big deal but just curious to see what can be done with it thanks for your time.
My readings are as follows using the taylor k006 test kit.
Thanks for your time .