The Correct Way to Clean a Pool With Algae
- 1). Adjust the pool pH to the 7.2 to 7.6 range. Do not skip this step, because chlorine is ineffective outside of this range. Use a pH test kit to check pH levels and adjust accordingly, using pH increaser or pH decreaser while running the pool pump.
- 2). Brush the walls and floor of the pool, using a pool brush. Loosen as much of the algae as possible. Turn on the pool pump and filtration system and keep them running 24 hours a day until the algae is eliminated.
- 3). Add a chlorine-based pool shock at the rate specified on the label for your pool volume. Dissolve the shock in a large bucket filled with water before adding it to the pool. Follow all safety guidelines on the label. If you regularly use stabilized chlorine products, use a non-stabilized liquid chlorine product.
- 4). Check the pool filter regularly during this process. Backwash or clean the filter whenever the pressure rises 10 pounds per square inch or more above normal.
- 5). Check the pool again after 12 to 24 hours. If any green remains in the pool, apply another dose of chlorine shock product. Dead algae will appear gray or white. Repeat the chlorine shock every 12 to 24 hours until the water turns gray or white.
- 6). Vacuum the swimming pool with the valves set to send the recovered algae to waste if possible, rather than through the pool filter. Clean the pool filter to remove any trapped algae.
- 7). Test all the pool chemical levels and adjust as needed to keep them within acceptable ranges.
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