Will Bleach Kill Algae?

Some homeowners also try to get rid of algae by using bleach. Bleach is a caustic chemical that can kill your lawn and plants. ... It penetrates black algae's defenses and removes the green algae that can grow on the shaded areas of your roof.

How much bleach does it take to kill algae?

You normally need 6 quarts of bleach per 10,000 gallons of water, so to kill algae, you might want to increase this to 8 quarts ( 2 gallons) per 10,000 gallons. If the pool water is very green and cloudy, consider doubling the basic dosage. Just remember to stay out of the water until the chlorine drops to safe levels.

Is bleach or vinegar better to kill algae?

Bleach, however, should not be your first option, especially if the area you plan to rid of algae is near plants or grass. ... Vinegar can also be used to rid of algae. Use a mixture of water and white vinegar to spray down the area and kill the algae. Rinse the surface alga off the concrete with a water hose.