Your Guide to Building the Perfect Swimming Pool in Wilmington, NCMarch 27, 2023
Here are 9 Reasons Why Your Saltwater Swimming Pool May Have Turned Green
- Algae growth: The most common reason for a saltwater pool turning green is the growth of algae. Algae can grow in a pool if the water chemistry is unbalanced, especially if the pH, alkalinity, or calcium hardness levels are too low or too high or if the chlorine levels are too low.
- Low chlorine levels: Chlorine is the primary sanitizer used in pools, and if the chlorine levels are too low, it can lead to algae growth and other water quality issues. This can be caused by a malfunctioning salt chlorine generator, improper use of chemicals, or insufficient water circulation.
- High levels of phosphates: Phosphates are a nutrient that can promote algae growth in a pool. They can enter the pool through various sources, such as fertilizer, leaves, or other debris. If the phosphate levels in the pool water are too high, it can lead to the growth of algae.
- High levels of nitrates: Nitrates are another nutrient that can promote algae growth in a pool. They can enter the pool water through various sources, such as rainwater or fertilizers. If the nitrate levels in the pool water are too high, it can lead to the growth of algae. Did you fertilize your yard lately? If so, that could be the culprit.
- High levels of metals: High levels of metals, such as iron or copper, can cause discoloration in the water and lead to algae growth. These metals can enter the pool water through various sources, such as source water or metal pool equipment.
- Poor filtration and circulation: Proper filtration and circulation are essential for maintaining clear pool water. If the pool’s filtration and circulation system are not working correctly, it can lead to stagnant water, which can promote algae growth and other water quality issues. Your pool pump should run on high 24/7 to clear a green pool.
- Poor maintenance: Regular pool maintenance is critical to preventing algae growth and other water quality issues. Neglecting regular maintenance tasks, such as brushing and vacuuming the pool, can lead to the buildup of debris and other contaminants in the water, which can promote algae growth.
- Weather conditions: Weather conditions, such as heavy rain or extended periods of hot weather, can affect the pool’s water chemistry and promote algae growth.
- Inadequate salt levels: Saltwater pools use salt chlorine generators to produce chlorine for sanitizing the water. If the salt levels in the pool water are too low, it can lead to insufficient chlorine production, which can promote algae growth and other water quality issues. Be sure to test your salt level.
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