uv pond filter

I Have A UV Light In My Pond But Still Have Green Water

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John writes, “I have a 1500 gallon backyard pond and have installed a uv light in it which was supposed to help with green water problems. It doesn’t seem to be helping very much, and I wondered if I did something wrong?”

Answer: Hi John and thanks for the question. Your plan to use a uv sterilizer in your pond to combat green water is a good idea. In truth, when you hear companies talk about fighting pond algae problems with a uv filter, it’s single cell, or green water algae that they are talking about specifically.

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Can A UV Pond Filter Control Algae?

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A UV pond filter may be one of your very best options at controlling algae in your small pond or water garden. UV or ultraviolet light is touted by manufacturers as a very good tool for algae control but some of the claims need to be clarified to ensure that this type of device will actually help you with your current problem.

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UV Pond Filters Fight Different Algae Types

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By definition, a uv pond filter is actually a combination of several different technologies put together in a single package. UV, or ultra violet light is actually not a filter at all, but when it’s combined in a system that also contains a biofilter, you’ll find this array to typically be referred to as a uv pond filter.

This type of system is becoming more popular for small pond owners because it integrates two commonly used, but different systems for algae control. Historically uv light and bio filters may both be installed in a pond but these new, pre-integrated units make sizing and installation a bit easier.

Let’s discuss the components of the pairing and some of the benefits they bring to the pond owner.

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