How do I get rid of green and black algae on my concrete pool deck for good chlorine only works a short time it comes back worse than ever?

Getting rid of green and black algae on your concrete pool deck for good requires a comprehensive approach. Here's a step-by-step guide:

1. Initial Cleaning:

- Clear the deck of any furniture or debris.

- Sweep the surface to remove loose dirt and debris.

- Use a pressure washer with a low-pressure nozzle to remove as much algae as possible.

2. Chemical Treatment:

- Apply a chlorine bleach solution (sodium hypochlorite) mixed with water. Follow the recommended dosage instructions on the product label.

- Scrub the deck with a stiff brush to work the solution into the algae patches.

- Allow the solution to sit for the recommended duration, typically around 10-30 minutes.

3. Rinse and Scrub:

- Rinse the deck thoroughly with clean water using a hose.

- Scrub the surface with a deck brush to loosen any remaining algae.

4. Rinse Again:

- Rinse the deck a second time until all traces of the bleach solution are washed away.

5. Repeat if Necessary:

- If the algae persists, repeat steps 2-4 until the algae are completely removed. Be sure to allow sufficient drying time between treatments.

6. Protective Sealer:

- After the deck is completely clean and dry, apply a concrete pool deck sealer. This forms a protective barrier that helps prevent algae growth and makes future cleaning easier.

7. Regular Maintenance:

- Keep the pool deck free from debris and dirt.

- Regularly inspect the surface for signs of algae growth.

- Promptly address any algae spots with a chlorine solution.

- Avoid over-chlorinating the pool water as this can contribute to algae growth on the deck.

8. Professional Treatment:

- If the algae growth is extensive or persistent despite your efforts, consider hiring a professional pool deck cleaning service. They may use specialized equipment and algaecide treatments that can effectively eliminate the algae and prevent its return.

By following these steps and implementing a regular maintenance routine, you can get rid of green and black algae on your concrete pool deck for good and enjoy a clean, algae-free pool area.