Everything you need to know about using bwc shock

If you've ever drawn the cover away your spa only to find a murky mess, you probably need some bwc shock to get things back in order. It's one of those things that every single spa owner eventually realizes is a non-negotiable portion of the regimen. You can't just fill the tub with water, toss in a few tablets, and hope for the best regarding six months. Life—and the bacteria that comes with it—just doesn't work that way. ...

April 3, 2026 · 7 min · Scalp Ascoe