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    Di-chlor or non-chlorine shock after each spa use?

    I have a Hydropool swim spa and I’m going to try the “Angi method” to sanitizing. The Angi method was created by someone who has and sells Master Spas swim spas. The Angi method is this: -Add di-chlor to bring spa chlorine levels up to 1-3 ppm -After each use, add non-chlorine shock -Add...