How to treat green water in your pool? A step-by-step guide

Technical problems:

1. Poor filtration: Improper filtration due to pump problems or clogged filters is responsible for up to 80 % of the water turning green. In addition, too short a filtration time can upset the water's balance and lead to green colouration before algae can even develop. It is therefore important to have accurate information on the necessary filtration time to ensure an efficient water treatment process.

2. Too little maintenance: Leaves, sand, pollen... Outdoor pools easily accumulate dirt, which can affect the water's balance and disinfection effect. It is therefore necessary to regularly check and clean the pool to maintain its optimal condition.

3. The human factor: The number of bathers in a pool also affects water quality. Sunscreen, sweat and other organic dirt from bathers can quickly contaminate the water. A simple rinse before swimming can help prevent rapid changes in water quality.

How to restore crystal clear pool water?

When water starts to turn green, it is important to act quickly to avoid costly chemical treatments. To eliminate algae and restore water clarity, the following steps should be followed:

1. Balance the pH: Keep the pH between 7 and 7.4, because algae thrive less in acidic water. Regular monitoring and adjustment of the pH level is essential to prevent algal growth. Click here to go to PH-plus and PH-minus. 

2. Check the chlorine level: Chlorine is an important disinfectant that helps prevent algal growth. Make sure the chlorine level is between 0.7 and 1.2 ppm (for stabilised chlorine) or between 0.4 and 0.7 ppm (for non-stabilised chlorine). Click here to buy chlorine for your pool. 

3. Activate filtration and clean filters: Clean the filter at least once a week and activate the filtration continuously to remove particles and algae from the water.

4. Use algicides: For more severe algal growth, the use of algicides may be necessary to effectively control algae and restore water clarity.

Green water without algae:

If the water is green without visible algae growth, the problem may be due to a chemical imbalance or too high a pH value. The following steps are recommended to restore water clarity:

1. Adjust the pH and water hardness: Check and adjust the pH and water hardness to restore chemical balance and optimise water quality.

2. Run continuous filtration: Activate the filtration to continuously purify the water and remove particles and impurities.

3. Use shock treatment: If necessary, shock treatment can be used to quickly eliminate organic matter and restore water clarity.