Restoring swimming pool water is one of the most important parts of being a pool owner. This requires good chemical balance to prevent the formation of algae and skin irritation from bad chlorine levels. If the pool chemical balance is not taken care of and the pool is not cleaned properly, you may see black or green forming on the liner or notice your skin turning red after swimming. This means you need to restore your pool water.
Take a sample of water from about 18 inches below the surface and place the water into the vials of your pool testing kit. Place the recommended drops of chemicals into the vials and shake them. Compare the color of the water to the color chart in the testing kit to determine the chlorine level and pH. Pool pH should be 7.4 to 7.6. Chlorine should have a free level of 1 to 3 parts per million (ppm).
Clean the pool by scrubbing the walls with a pool brush to remove algae and dirt. Skim the surface layer of the pool with your pool skimmer. Throw the hose of your pool vacuum into the water to fill it, then connect one end to the vacuum connection on your pool pump and the other end to the pool vacuum attachment. Vacuum the bottom of the pool. Pull out the filter baskets from the side of the pool, empty and rinse with water.
Pour a pool shock treatment into the pool to kill all algae and microorganisms growing in the water. Use the chlorine measurement from your test for the recommended amount of chlorine shock, as indicated on the side of the package. Allow the pool shock to sit in the pool for several hours, then test the pool water again. Once the pool chlorine level is 1 to 3 ppm, the pool is safe for swimming.
Add soda ash to your pool water if the pH is below 7.4. Use the chart on your pool testing kit for the recommended amounts for your pool.
Add muriatic acid to the pool to lower the pool pH if it is over 7.6. Follow application instructions on the packaging.