How do you treat black algae in pool?

Finding Black algae in the pool is bad news for any pool owner. This stuff needs to be handled as quickly as possible, because if you wait it will turn into a major disaster. Getting rid of Black algae requires some hard work because it has a waxy coating that protects it against chlorine and algaecide. There is no easy way to get rid of black algae. It will take manual work , the right chemicals and vacuuming to eliminate this stuff To handle black algae spots you will need: a stiff pool brush, chlorine tablets and algaecide. These directions are not for a vinyl-lined pool. Do not swim in your pool during the black algae spot treatment. Shutting of the pool pump will help in preventing the further spread of the Algae during treatment, Each black algae spot needs to be brushed with a stiff brush in order to break the protective waxy surface. Use a chlorine tablet spot treats the black algae spot (not on vinyl lined pools). Then pour concentrated all-purpose algaecide on the spots Leave the dissolved algaecide and chlorine on the black algae spot over night. If you would rather use chlorine granules just get some old socks to put it in and place it on the spots instead On the following day loosen the dead algae spots and vacuum to waste. Do not put it through your filter, as there is no guarantee you killed all of it. Repeat the procedure for any further spots you see it because you need to stay on top of this stuff if you have been blessed with it. If there are still some black algae spots you should repeat the process. After vacuuming to waste set to rinse, rinse for a minute or so and then to filter start filter pump for circulation. Adjust pH. And keep the chlorine level adjusted to 7.2 - 7.6) to prevent it from happening again. Keep your chlorine residual at 1.0-3.0ppm.