After two weeks of rainy weather and no chemical treatments the in ground pool is consumed with black algae literally pitch from surface For ease treatment should we drain pool?

Draining the pool is not the best for pool algae as it can lead to structural damage and other problems.

It's best to address the algae problem directly. Here are some steps you can take to treat and remove black algae from your inground pool:

1. Test the Pool Water:

- Use a pool test kit to check the water chemistry, including chlorine, pH, and alkalinity levels, and adjust them as needed. Having the right chemical balance is essential for effective algae control.

2. Super-Chlorinate the Pool:

- Raise the chlorine level to a higher level of 10-20 ppm (parts per million). Continue running the pool pump 24/7 to circulate the chlorinated water throughout the entire pool.

3. Brush the Pool Surfaces:

- Use a stiff-bristled brush to scrub the pool walls, floor, and steps to remove as much black algae as possible. Pay special attention to areas where the algae is concentrated.

4. Circulate the Pool Water:

- Ensure the pool pump is running continuously to circulate the water and distribute the chlorine throughout the pool. This will help the chlorine come into contact with the algae cells.

5. Use an Algaecide:

- Add a non-metallic algaecide specifically designed for black algae. Follow the instructions on the product label for proper dosage.

6. Monitor Chlorine Levels:

- Maintain the chlorine level between 10-20 ppm until you see a noticeable improvement in the algae situation.

7. Clean the Filter:

- Backwash the pool filter regularly to remove any trapped algae particles. You may need to clean it more frequently during this algae treatment process.

8. Patience:

- It may take several days to weeks to see significant results in removing the black algae. Keep the pool pump running continuously, continue brushing the surfaces, and monitor the chlorine level.

9. Maintenance:

- Once the black algae is removed, it's essential to maintain proper pool care to prevent future algae growth. This includes maintaining the recommended chlorine level, proper pH balance, and regular cleaning.

10. Professional Pool Service:

- If you find that the black algae is particularly stubborn, consider hiring a professional pool service to assess the situation and provide the appropriate treatment.

By following these steps and being persistent, you can effectively treat and remove black algae from your inground pool without draining it.