Green Water?
Make sure your UV Quartz is Clean
During the start of the season with everybody undertaking pond spring cleans we sell a huge number of replacement UV bulbs, but changing your bulb is only part of the job. All UV bulbs are protected from the water by a quartz sleeve, these come in lots of different shapes and sizes, but are common to all units and are there to keep the water away from the electrics. They are made out of quartz glass because the UV light used in out systems does not travel well through normal glass, unfortunately, this does make them delicate and prone to damage. In the same way that the UV light produced by the bulb will not pass through normal glass, it will not penetrate in to the water if the quartz sleeve is dirty. After a faulty bulb the second most common reason for poor UV’s performance is the quartz sleeve being coated in limescale. This limescale build up can be so extreme that you can’t even see your finger through the quartz, so the light has no chance.
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