Treat Black Algae Vinyl Liner

Over the last 12 yrs i have probably looked at over 100 inground vinyl pools with this black mold growth under the liner.

Treat black algae vinyl liner.

Any algae including black algae tend to bloom in bodies of pool water with a high ph level low chlorine bad circulation and filtration and not enough chlorine. Don t leave the chlorine on the spot for too long as it may bleach the liner. Of calcium hypochlorite granular chlorine in an old sock to put on a spot. Brush daily for a week with the proper brush for your pool paying special attention to algae affected areas.

It will flourish in a warm pool with lots of sunny days. Also black algae seldom forms in pools with fiberglass or vinyl liners. You can also use about 1 2 lb. Brush every black algae spot with a steel bristle brush to remove the protective layer.

If you have a vinyl lined pool do not use a wire brush as this can tear the liner shock or super chlorinate the pool using granular chlorine also known as calcium hypo chloride. Alot of people initially treat it chemically as a algae growth major shock treatment in addition to a special algaecide. The protective layer that forms on black algae makes the algae otherwise impervious to regular sanitizers so you must brush the algae to break through this layer so that chlorine and algaecides can kill the organism. It s more at home in concrete plaster or gunite pools because they re porous surfaces the organism can really latch onto and even grow roots past the surface.

Black algae in a vinyl pool is possible but not very likely. Black algae have deep roots that work their way into. Nylon brushes will not work. I mean we.