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  1. G

    Brown patches on bottom of pool...

    thanks for responding...from here on out i will regularly check with the oclt before going crazy and spending money on an unnecessary slam...it gets expensive with the high cya and the amount of 871 drops used..thanks again i appreciate it!
  2. G

    Brown patches on bottom of pool...

    new here...but i have been using the tfp method since july of last year...this year i added an swg to my 12500 gallon above ground pool which i havent used yet...after opening, i slammed the pool...and then added salt and raised the cya to swg levels...i noticed the brown patches the bottom and...