Re: High CYA, High Alkalinity - everything else fine
Originally Posted by
distressedpool
I have backwashed my pool alot, and that along w/ water evap due to high temps should have enough fresh water in pool I would think.
One other thing to keep in mind is that evaporation and topping off does not cause lower CYA. When the water evaporates, the CYA does not, thereby increasing your CYA concentrations. When you add water to top off, you dilute your CYA ppm back to the original level.
How are you testing? OTO test kit, HTH 6 way drop test, strips or pool store?
30' round 22K gal AG vinyl pool; skimmer tabs and GV Bleach; Hayward SD60 sand filter; Pentair 1.5 HP pump; hrs; ; utility water; summer: none; winter: none; K-2006 Test Kit ; PF:5.5
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