Danner 12971 10-Watt Ultraviolet Lighting Replacement Bulb

the company was very easy to work with very responsive customer service. unfortunately, the lamp was not what I needed.

At the beginning of the spring season, my pond water was green with algae. Within 2 days of replacing the bulb in my clarifier, my pond was clear. This product works very well.

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I run my pond pumps 24/7 from about April through November, so I've been buying replacement bulbs every year for about 10 years. Every year I look for the best value. These bulbs really do help keep down the algae.

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