Black Algae Out
Heavy-Duty Algaecide
Non-Foaming
Penetrating Formula
Metal-Free
Black Algae Out is a highly concentrated algaecide specifically formulated to break down the tough, protective waxy coating of black algae colonies. Use this treatment when you see stubborn black spots on your pool walls or floor that don't respond to standard chlorine treatments.
Why You'll Love It
- Deep Penetration — The formula includes wetting agents that help the active ingredients soak deep into the roots of the algae.
- Gentle on Surfaces — Safe for use in all pool types, including vinyl liners, fiberglass, and plaster surfaces when used as directed.
- Worry-Free Swimming — This non-foaming solution won't create messy suds or affect your water balance, allowing for a smoother cleanup process.
- Long-Lasting Defense — It stays active in the water for an extended period to help prevent the regrowth of spores during the treatment cycle.
Best For
- Plaster and Gunite pool surfaces
- Treating dark spots in corners and steps
- Vinyl liners with localized spotting
- Pools with high organic bather loads
How to Use
- Vigorously brush the black algae spots with a stiff pool brush.
- Adjust the pH to 7.2–7.6 and add a shock treatment to the water.
- Pour Black Algae Out directly into the water around the affected areas.
- Keep the pump running for 24 hours and continue daily brushing.
Pro Tip
Black algae has a "cap" that protects it; if you don't brush hard enough to break that seal before adding the chemical, the treatment cannot reach the roots.
Always follow label directions. Test and balance water chemistry before and after treatment. Keep chemicals stored sealed, cool, and dry.
