How to Chlorine Wash a Plaster Pool

If you have a plaster pool, you must maintain its cleanliness and safety. Chlorine is an effective disinfectant that kills harmful bacteria and viruses in the water. In this article, we will guide you through the steps to chlorinate your plaster pool safely and efficiently.

What You Need

Before washing with chlorine, ensure you have all necessary supplies, such as:

  • Chlorine granules or tablets

  • Chlorinator or pool pump with a chlorinator attachment
  • Pool cover or tarp (optional)

  • Gloves and eye protection

  • Bucket or container for mixing the chlorine solution
  • Hose or spray nozzle for applying the solution to the pool
  • pH test kit for monitoring water pH levels

How to Wash Your Plaster Pool with Chlorine

  1. Check pH Level: Before washing, measure the pH level of your plaster pool. The ideal range is between 7.2 and 7.8.
  2. Clean the Pool: Remove any debris or dirt from the bottom using a pool vacuum or skimmer net. Also, remove leaves or other objects in the pool.
  3. Mix Chlorine Solution: Mix chlorine granules or tablets with water in a bucket or container according to the manufacturer’s instructions. Ensure the solution is strong enough to kill bacteria and viruses but not so strong that it damages your plaster pool or equipment.
  4. Apply Chlorine Solution: Use a hose or spray nozzle to apply the chlorine solution evenly on the surface of the pool. Cover the entire surface uniformly, avoiding getting the solution in your eyes, mouth, or nose as it can cause irritation and other health problems.
  5. Cover the Pool (Optional): If you have a pool cover, place it over the pool to distribute the chlorine solution evenly and prevent evaporation. This step is optional but can save time and effort in the long run.
  6. Monitor pH Level: After washing your plaster pool with chlorine, test the pH level of the water to ensure it’s within the ideal range. Use a pH test kit or other testing device according to the manufacturer’s instructions. If the pH level is too high or low, adjust it by adding or removing chemicals until it reaches the desired level.
  7. Wait and Test Again: Wait for a few hours or overnight for the chlorine solution to work its magic. Then, test the pH level again to ensure it’s within the ideal range. Repeat the process if necessary.


Q: Can I use chlorine on a fiberglass pool?

A: No, chlorine can damage fiberglass pool surfaces and equipment.

Q: How often should I wash my plaster pool with chlorine?

A: Once a week during the swimming season to maintain cleanliness and prevent bacterial growth.

Q: Can I use any type of chlorine in my plaster pool?

A: Yes, you can use any type of chlorine safe for use in swimming pools, such as granules or tablets. Follow the manufacturer’s instructions and avoid overuse.