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Algae and Clarity Control

Why is my pond green?

Green water can result from several different causes. Most commonly, it is the result of a suspended algae bloom triggered by excess sunlight and elevated nutrient levels. However, seasonal factors such as heavy pollen or other airborne organic particles—particularly in late spring and early summer—can also cause temporary water discoloration.

Because the underlying causes require different treatment approaches, proper diagnosis is essential. We recommend scheduling a consultation so we can accurately determine the root cause and implement the most effective corrective solution.

I have a UV light but am still seeing algae in my pond. Why?

The type of algae present plays a critical role in determining treatment effectiveness. Ultraviolet clarifiers are designed to control suspended algae that causes green water; however, they are not effective against filamentous or “string” algae, which requires a targeted, multi-step treatment approach.

If you are experiencing green water despite having a UV system installed, the unit may require servicing (such as bulb replacement or sleeve cleaning), or the discoloration may not be algae-related at all. A proper evaluation will allow us to determine whether equipment maintenance or an alternative treatment strategy is necessary.

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