Do I test FC, CC and CYA again or just FC and CC?
Re: adjust cya before or after shocking
Do I test FC, CC and CYA again or just FC and CC?
16'x30' rectangle 22K gal IG vinyl pool; SWCG; Hayward Pro SEries S220T sand filter; Hayward pump; hrs; Taylor K-2006 ; city; PF:5.5
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