Arcadia Ultra Clear 6w U.V. Tube T5

Arcadia 6W U.V. Linear Light Tube

Green water, caused by millions of suspended microscopic algae, is the curse of many pond keepers, so what is the best way to control this nuisance?

A good quality pump, filter, and ultra-violet clarifier system, of a capacity to suit the size of the pond is all that is required.
As water is pumped through the clarifier, the single-celled algae are exposed to high levels of UVC radiation emitted from a UV lamp.

This UV exposure destroys the algae cells, which are then broken down by bacterial action in the filter.

The UV output of the lamps degrades with time, and so they will need replacing periodically.

As this is an Arcadia tube this will give you the confidence that you are buying a very high quality replacement U.V. light tubes

You should replace the UV lamp ideally every  6 months use, even if it is still glowing as its UV output will be greatly reduced and after 1 year the will be uneffective against killing algae in your pond.

Technical information