In certain cases, when a pool is full of algae, you have to vacuum the algae directly out of the pool. You can do this by brushing the algae off the walls, then adding a ‘floc’ to the water. It coagulates the algae and causes it to settle. to get rid of the algae in your pool. . After cleaning and shocking your pool, wait for the chlorine to fall below five parts per million, then add a dose of algaecide. Brush your pool to loosen any last bits of algae you can’t see. The algaecide will kill it so it can be filtered out. A salt water pool is not much different from a regular chlorine based swimming pool. Salt in your pool water runs through an electrically charged line after it has . Jan 13, 2011 – . stubborn green algae that is stuck to the bottom of the plaster pool. . if you have it) and use your existing test kit until the new one comes. May 9, 2014 – Using pool shock to remove pool algae. . So now that you’re back to a crystal clear, beautiful blue swimming . I am new to pool ownership. Jul 18, 2005 – Black dust – could be algae – on bottom of pool . only about 18 inches of new water we could see it already returning on the floor of her pool. When using large amounts of shock to kill algae, water may become cloudy. This should not be a problem, and the water should clear up after running the filter. Wait until the chlorine ppm has fallen below 5.0. After this, add a pool algaecide like Leslie’s Algae Control and brush the pool again. Sep 7, 2016 – I had black algae covering the bottom of my inground pool, and the walls were covered in green algae; there were worm tracks all over the . Algae are always present in swimming pools, even clean and blue pools, at a . into the pool plaster or tile grout, and unless the roots are destroyed, a new head .