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Most people utilize a Koi fish pond as an outdoor feature to either enhance landscaping or simply because they like it. There are those who have the means to enjoy an indoor Koi pond, however. And those little fish will never have to worry about their home sweet home freezing up. Since most Koi ponds are outside, however, let’s take a look at the very real problem of pond freeze up.

Ultraviolet clarifiers are used in many of today’s Koi ponds. There are a couple of myths floating around about them, however, and we want to bring your attention to them.

• Myth number one: ALL of the microorganisms and algae in the biological cycle will be killed via clarifier lights and UV sterilizers.
• Myth number two: A ‘UV pond filter’ is another way of referring to clarifiers and UV sterilizers.