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If it is genuine 'black algae' it is very difficult to remove without emptying the pool and gouging the black algae out of the pool surface. Other algae can be removed by shocking the pool, filtering continuously and brushing walls while maintaining a good sanitizer level.

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13y ago
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15y ago

Shock the pool add algaecide and scrub down the sides and bottom of the pool with a stiff pool broom there should be a lot of dead algae on the bottom of the pool the next day. vacuum it to waste if you want to avoid the risk of pushing life algae through the filter and back into the pool.

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Q: What do you do if your pool has green algae and black algae spots?
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What is the best treatment for black algae which is just beginning to manifest in your pool and once controlled how do you keep it from returning?

Black Algae presents in 1 to 3cm black (or dark blue green) spots, It forms in a layers. the first layer may be killed by chlorine but protects further layers from destruction. This form of algae is slow growing and hardy. It is extremely chlorine resistant. to treat Black algae. Turn of the pump,Brush the algae spots thoroughly with a hard brush. then use chlorine tablets to treat the algae spots individually (this is not recommended for vinyl pools). Pour a concentrated all purpose algaecide on the algae spots. Leave it overnight. Restore water circulation, brush dead algae and vacuum it to waste. You may have to repeat the process .when you are finished, check the water balance shock the pool and make sure that you keep the chlorine up to it to help prevent further out breaks.


What are three main groups of algae?

---- Green Algae: A very common variety, It is often found floating free in the water, and also clings to the pools walls. Unlike severe copper precipitation green algae reduces water clarity, Green algae's also appear as "spots" on surfaces, in rough places, or areas where circulation is low.Yellow Algae: This variety of algae clings to walls and is also referred to as mustard algae. It is generally found on the shady side of the pool, is sheet forming, and difficult to eradicate completely. This variety is resistant to normal chlorine levels and requires extra effort to eradicate.Black Algae: the hardest algae to get rid of, Black algae has a root system and a protective waxy coating that makes eradication extremely difficult. Black algae appears as dark black or blue/green spots, about 3 or four millimetres across, They have roots that can extend into the plaster or tile grout, ----


What causes black algae?

There is no such thing as actual black algae. It is just a name given to crystallized green algae. Green algae that can not flourish will die and crystallize and try to grow again and again in the same spot forming those black buds. Usually you will get black algae from keeping a constant level of chlorine say 3 to 5 ppm's and not shocking (Raising the chlorine level over 10 ppm's) the pool often enough.


Why does algae grow on rocks?

because the rocks preduce the right situantions for them to live


Can a pool get orange algae?

Yes, a pool can get orange algae.

Related questions

What is the first sign of green and black algae?

Black algae shows itself as small black spots on the pools floor walls and fittings untreated they grow. Green Algae often starts as a greenish tinge on the walls or other surfaces of the pool and spreads into the water making it turn green if left untreated.


Why does your pool liner turn green in spots?

Photosynthasis


What kind of algae grow in pools?

pool algae...YUCK!!!! it's algae basiclly and it grows FAST!!!!!!! Basiclly the picture tells all. The pool became green and don't imagine swimming in it!!! This is echosong101lol speaking to the person who wrote this^^^^^ Pool algae is not that bad you know.Its nature.To be honest, I wouldn't mind swimming in it.(I would just want goggles)!!


What is the best treatment for black algae which is just beginning to manifest in your pool and once controlled how do you keep it from returning?

Black Algae presents in 1 to 3cm black (or dark blue green) spots, It forms in a layers. the first layer may be killed by chlorine but protects further layers from destruction. This form of algae is slow growing and hardy. It is extremely chlorine resistant. to treat Black algae. Turn of the pump,Brush the algae spots thoroughly with a hard brush. then use chlorine tablets to treat the algae spots individually (this is not recommended for vinyl pools). Pour a concentrated all purpose algaecide on the algae spots. Leave it overnight. Restore water circulation, brush dead algae and vacuum it to waste. You may have to repeat the process .when you are finished, check the water balance shock the pool and make sure that you keep the chlorine up to it to help prevent further out breaks.


How do you get the green out of your pool?

By killing the green algae with an algaecide available at your pool shop.


Pool sand filter is making your pool green?

The sand filter wont make a pool green this happens a s a result of algae.


How do you stop a pool from going green?

When a pool turns green, the cause is the build up of algae. To remove the algae, chemicals will need to be bought to restore the PH levels in the pool, killing the algae.


What would cause a pool to be green?

Algae


What are three main groups of algae?

---- Green Algae: A very common variety, It is often found floating free in the water, and also clings to the pools walls. Unlike severe copper precipitation green algae reduces water clarity, Green algae's also appear as "spots" on surfaces, in rough places, or areas where circulation is low.Yellow Algae: This variety of algae clings to walls and is also referred to as mustard algae. It is generally found on the shady side of the pool, is sheet forming, and difficult to eradicate completely. This variety is resistant to normal chlorine levels and requires extra effort to eradicate.Black Algae: the hardest algae to get rid of, Black algae has a root system and a protective waxy coating that makes eradication extremely difficult. Black algae appears as dark black or blue/green spots, about 3 or four millimetres across, They have roots that can extend into the plaster or tile grout, ----


Why is your pool green with no sign of algae?

Trees above reflecting the pool.


What is the most common method of treating green algae in a pool?

Pool Shock


How do you rid salt water pool of black spot algae?

If there are just a few spots and you do not wish to drain the pool you must first scrape the "head" off with a wire brush or algae stone and then apply a granular/powder chlorine directly on top of the spot. If the pool is riddled with the stuff it would probably be easier to drain the pool, scrape off the heads of the black algae and then chlorine wash the pool. Let the chlorine sit for a half hour before rinsing.