Tips for turning your pool from green to clean:
Check your chlorine levels. If below 0.5ppm you need to “shock” the pool water with a large dose of chlorine to 10ppm. Ensure the filters are running and don’t use the pool until the chlorine level falls below 3ppm.
Lower the pH levels by adding acid. Then later add a copper treatment to the water to kill the spores. Aim for a pH level of between 7 and 7.6. Heavy rain, lots of swimmers and animals such as dogs can increase pH levels.
Use a quality algaecide to kill algae. Brush pool walls to remove algae. Then vacuum the loosened algae from the pool floor the next day.
Make sure your filter is working effectively. Pool water needs to be filtered, and will not clear up very quickly if you have a filter that doesn’t work properly. It doesn’t matter how much shock you put in the pool if you have a poor filter.