How to Get Rid of Mustard Algae in the Swimming Pool
- 1). Dip a pH testing strip in the water and compare the color to the pH test chart. Adjust the pH of the pool to between 7.0 and 7.2 by adding chlorine according to the instructions on the packaging.
- 2). Brush the walls and the floor of the pool with a pool brush to loosen the algae. Let the algae settle, then vacuum the algae out using your pool vacuum. Backwash the filter after this process.
- 3). Add a package of oxidizer to the pool to increase the oxygen in the water and fight against the algae. Apply the package of oxidizer according to the number of gallons of water in your pool and the instructions on the label.
- 4). Add a mustard algae algaecide to the pool eight hours after the oxidizer is added to the water. Follow the instructions on the algaecide label for application.
- 5). Toss the brushes and vacuum and any other equipment you used to clean the algae into the pool to kill off any lingering algae.
- 6). Vacuum the pool again in two days and test the water pH for safety.