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    Slam question for new pool owner

    Hello, I am battling my first cloudy pool with mild algae growth on the bottom. I have a 15,500 gallon vinyl liner pool. CYA - 30 CC - .5 PH - 7.2 I used the SLAM FC target of 12 and got it here last night. Early this morning before heading to work the FC was 10. I brought it back to 12 and...
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    DPD 870 Powder not dissolving

    My pool is pretty cold, around 53 degrees. When I add my DPD powder (870) it doesn't turn a color and barely dissolves. There are clumps of it at the bottom of the tube. I used this powder two days ago and it worked fine. Water was a bit warmer though. Any ideas or help would be appreciated...