What are Pond UV lights?
Eco-systems such as ponds require continuous care and maintenance. This ensures that aquatic life (whether it’s animals or plants) are healthy and are able to thrive in their environment. Pond UV lights or UV ‘filters’ are ultraviolet light systems that have been used for years in ponds and aquariums in an effort to control green water caused by algae.
How do UV filters work?
The first thing to note is that UV filters are technically not filters. By definition, UV systems do not function as filters. That’s because they don’t actually remove any unwanted material. UV clarifiers, as they are better understood, function as sterilisers because they work simply by killing algae. however, the algae still remain in the water because UV Clarifiers do not remove them.
UV lights work when water from your pond is pumped through their light path. The single-celled, free-flowing algae within your pond water is then exposed to these high levels of ultraviolet light. This light destroys their DNA and kills them. The damage caused to the algae’s DNA through this light also causes them to flocculate (clump together). Making the algae easier to trap and remove from the pond water. As mentioned before, the UV system does not remove algae from the pond, it simply kills them.