Hi all -
I have what are known metal stains on my vinyl liner. I made sure to drop the pH to 7.2 as recommended by Jack's. My FC was still at a 9.5 when I did this last night. I only added one of the two bottles I have on hand. Typically when I add it, the results are remarkable and it's like it's being 'erased' as it's added. Last night I saw very little difference with the one bottle I added.
I know that one bottle is not enough for the gallons in my pool (between 26000-27000) but I was wondering if there is something else that can be going on that would prevent it from working? I walked it around the perimeter and only made it halfway around the pool with the one bottle, but when I realized it had had barely any impact, I held off adding the second bottle figuring I should check with the experts first.
I do know for a fact that it's metal staining and not algae based on the Vitamin C test.
Any thoughts on if I should be checking for anything else? Or is it that I need to wait for the chlorine to drop to a more 'average' number of around 5ish?
Thanks in advance!