Recent content by robertwo

  1. R

    Iron Stains and Oxalic Acid

    thanks for the reply Richard, very informative and helpful. A quick question about TA and pH. Most people I speak to say their pool tends to drift from the 7.3 range upwards, thus becoming more alakaline with a pH moving towards 8. My pool goes completely the opposite way, drifting from 7.3...
  2. R

    Iron Stains and Oxalic Acid

    Update: Finally the stains are gone. I just added another 1kg of the OA and it cleaned up like new. Comment on my experience: 1. As for the cloudy water, it disolves quick in a coupe or so days, or I just floced the pool left the robot running over night and the pool was fairly clear by...
  3. R

    Iron Stains and Oxalic Acid

    thanks for the replies. still trying to resolve this issue. the chlorine is now down to 0, after changing about 10-15% of the water for fresh. After the water change the chlorine started to fall rapidly. Ok, so this morning the pool tested 0ppm for chlorine, pH was at 6.8 so I added 1kg of...
  4. R

    Iron Stains and Oxalic Acid

    Ok, I'm still waiting for the chlorine levels to drop in the pool. As i mentioned previously, I shocked the pool with the recommended amount more than a week ago and the readings i was taking showed 10ppm after shocking the pool. It's now a week later and the level is still 6.5ppm..... this...
  5. R

    Iron Stains and Oxalic Acid

    Thanks for the reply, will get started on this asap.
  6. R

    Iron Stains and Oxalic Acid

    Hi all, new to this forum. I'm located in France and need some help with a pool with a vinyl liner that has turned brown. I think, but can't be 100% sure that the stains occured when I was welding and grinding a few days ago and think that the iron grindings have probably blown in to the pool...