Topic split from this thread by Moderator: http://www.troublefreepool.com/help-...ns-t12242.html
I believe I have these same stains - there was MUCH leaf debris at the bottom of my pool this year. I had a late opening due to lack of funds, pool turned into a bog, leaves smelled horrid when I scooped them out, had insect larvae everywhere, etc.
I ended up draining 95% of the water, threw 7 gallons of bleach in there, scrubbed everything down with Borax, and refilled with my garden hose.
I did have to use some floc to get the water clean and get the last of the debris vacuumed out.
Then I came to this site - after reading about pucks and commercial shock, CYA levels, and battles with pH, I'm not going to use pool supplies again unless I have to.
So now I have 12 1 1/2 gallon jugs of bleach, 20 pounds of baking soda, and I forget how many pounds of Borax in my chemical supply cabinet.
But I do have these stains - I rubbed a puck over them and noticed little difference, however.
Just wondering what levels I need to raise the FC to, to rid the liner of the stains?
I ran out of most of the testing agents in my liquid kit, and Walmart did not have any new kits, so I am stuck using a dipstick test. Less accurate, I know, but I have to work with that for now. I don't think my CYA will be very high since the pool is full of city water, but then again, I have no idea what they put in city water...so....
Here's what the stick is telling me:
CH - 100
TC - 1
FC - 0
pH - 7.8
TA - 120
CYA - 40
So....I got the hang of the pool calculator. Just wondering how to effectively get rid of the stains. Thanks!