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I am using the BBB method and my last fill was about 3 months ago. I used dichlor initially to achieve ~30ppm CYA. I tested recently and found the CYA is less than 10ppm now. I remember seeing that CYA needs to be periodically added to maintain its level but forgot about it. My wife has been...

I am considering adding borates to my hot tub using Borax. All of the instructions I have found say to use Muriatic Acid with the Borax to balance the PH. Is there any reason I can't use Dry Acid instead? I already have Dry Acid readily available as PH Down. The amounts of Muriatic Acid and...