Category 03 · UV clarifiers

UV
clarifiers.

A UV clarifier is a chamber through which pond water is pumped past a UV-C lamp. Single-celled suspended algae receive a germicidal UV dose on each pass and aggregate into larger clumps that a mechanical filter can then remove. UV clarifiers target green-water turbidity; they do not affect filamentous string algae on pond surfaces. Sizing is typically expressed in watts per gallon of pond volume.

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Category note

UV clarifiers address green water (suspended algae) rather than string algae. Manufacturer wattage ratings assume a specific flow rate; running too fast or too slow reduces UV dose per pass.