How Much Bleach Do I Put In My Hot Tub?
How Much Bleach Do I Put In My Hot Tub? 1//4 cup of bleach should raise your spa in the neighborhood of 4 ppm and 1 cup to about 10 ppm (this would be either 5.25% regular bleach or 6% ultra bleach. What happens if you put bleach in a hot tub? Once chlorine is