Clorine was added but pool water is still sky blue?

- Insufficient Chlorine Concentration: Ensure that you have added the correct amount of chlorine to the pool water. Refer to the recommended dosage on the chlorine product label and adjust accordingly.

- Chlorine Demand: Certain substances in the pool water can consume chlorine, including dirt, algae, and nitrogen compounds from skin oils and other contaminants. If the chlorine demand is high, the added chlorine may be used up quickly, preventing it from effectively sanitizing the water. Try adding a higher dose of chlorine initially to satisfy the demand.

- Sunlight Exposure: Chlorine breaks down quickly under the sun's ultraviolet (UV) rays. If your pool is exposed to direct sunlight, the chlorine may be getting depleted rapidly. To address this, use a chlorine stabilizer or cover the pool when not in use.

- pH Imbalance: The pH level of pool water affects the effectiveness of chlorine. When the pH is too high (above 7.8) or too low (below 6.8), chlorine becomes less effective at disinfecting. Test the pH of your pool water and adjust it to the ideal range of 7.2 to 7.8 using pH increaser or decreaser as needed.

- Combined Chlorine: Over time, chlorine reacts with nitrogen compounds in the pool water to form combined chlorine, also known as chloramines. Combined chlorine has a weaker sanitizing effect compared to free chlorine. If the combined chlorine level is high, it can result in the pool water looking blue but not being properly disinfected. Regular shocking treatments (adding a high dose of chlorine) can help eliminate combined chlorine and maintain free chlorine levels.

- Water Quality Issues: Other water quality factors, such as high levels of metals, phosphates, or organic contaminants, can affect the effectiveness of chlorine and alter the appearance of the water. It may be beneficial to have your pool water professionally tested to identify any underlying issues and receive expert advice on correcting them.