Black Algae In Pool Plaster

If you have black algae in your pool you have black algae in your filter.

Black algae in pool plaster. Black algae is. How easily it brushes off. The keyword here is surface though so it s not the same thing. Black or blue green spots with raised heads not free floating.

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. It will flourish in a warm pool with lots of sunny days. Does not brush off the wall easily. This is why you will need to shock the.

If the algae problem is extensive use a filter cleaner rather than just plain water. Remember swimming pool black algae has layers so you want to get as many layers off as possible before adding the chlorine. To treat black algae in your swimming pool start by brushing the sides and bottom of your pool to break up the algae so it s easier to remove. In can happen in vinyl pools but it s rare.

Where does black algae come from. It appears as dark black spots on the walls and floor of the pool and is slippery to the touch. This type of algae forms in a layered structure with the outermost layer protecting the lower layers. This is for a concrete pool gunite swimming pool and not vinyl swimming pools as this may tear your vinyl liner.

If it comes off easily it s not black algae. After the algaecide has run its course shock the pool by adding granular chlorine to kill the remaining algae then shock it again after 3 days. Black algae typically afflicts plaster pool surfaces. This slime layer must be brushed off to allow the leslie s black algae.

Don t confuse with mineral stains some cause black stains that won t scrape off. Finally vacuum the pool to remove the dead algae and wash the pool filters and equipment with bleach so. It is also chlorine resistant. A few samples are shown below.

It is virtually impossible in vinyl or fiberglass pools due to the smooth surface that prevent the roots from embedding themselves. Identifying black algae in a swimming pool. If there s only a small amount of black algae in the pool you can probably get away with backwashing your pool filter for sand or de filters or rinsing the filter cartridge. It is grows very slowly but is extremely hard to get rid of once it has developed completely.

Black algae in pools is similar to that which can be found in between bathroom shower tiles and on silicone seams near the bathtub. Next add a copper based algaecide to the water and aim the water return jets at the algae patches. Black algae is mostly for concrete and plaster pools. Black algae secretes a slime layer that protects the spore from chlorine bromine or algaecide.

Rough patches or corners in your pool s plaster they like to attach to something. This is often confused with black algae as it can discolor the surface black and doesn t scrape off. If the pool surface is gunite plaster or concrete use a wire brush for all other surfaces use a nylon brush. Found in pools even with proper filtration and sanitation.