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    Calcium Chloride spots on plaster

    We have slowly but surely been balancing the water in our new 16,500 gallon pool. We have Pebble Tec finish. My numbers are as follows: Alkalinity - 70 PH - hovers around 8.0, but I consistently bring it back down to 7.6 using muriatic acid TC - I keep it around 4.0 but have to add about 40...
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    New pool start up - 0 CYA and FC

    Hello, We just got our new pool finished. It's 16,500 gallons with Pebble Tech plaster. I'm having a hard time keeping chlorine levels up. Our pool builder recommended using 3" tabs into the feeder off the main filter. We've had that running 12 hours a day but chlorine and CYA levels are...