Presumably, for a 60 ppm borate level to inhibit (NOT: kill or prevent) algae?
10K pool:
+ 29 lbs of boric acid => (Amazon 20# ~$50) (Amazon 10# ~$26) (Proteam Supreme Plus 20# ~$100)
+ 45# borax (10 72oz boxes) + 3 gal of muriatic acid [borax + HCl (muriatic acid) = boric acid]
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