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I build myself an Arduino powered chlorine injector. Because FC will be fairly constant, do I want to use the TFP calculator’s values for a swg pool or a non-swg pool?

I have a 25000 gallon pool and the cya is low - 20ppm. According to PoolMath adding 16 oz of dichlor raises CYA by 2.4. The dichlor I have is Clorox 4 in 1 pool shock which, on the label, is 58.2% dichlor. Am I correct in assuming that 16oz of this product will raise CYA by 2.4 (the value...