need help reading cya results from K-2006 test kit
I think I may not be reading the cya results correctly. Instructions on K-2006 test kit say "Slowly transfer cloudy solution to small comparator tube until black dot on bottom just disappears when viewed from top." I thought that meant that I should not see the dot at all but my results are always 30. What am I looking for, when the black dot begins to turn gray? I'm using reagent way too fast this way...
Thanks!
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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