Size and type of organism.
Does uv light kill algae.
Other factors include excess nutrients and high light levels.
Uv lights work when water from your pond is pumped through their light path.
The uv lights kill the algae returning clear water to the pond.
Algae can be extremely problematic for both beginner and experience aquarists so everyone can benefit from an aquarium sterilizer.
The uv light has no residual effect and will not kill organisms attached to fish e g adult stage of ich or rocks e g algae.
By showering algae with ultraviolet rays a uv sterilizer kills algae the same way it kills other microorganisms.
Once killed the algae remains in the tank so the water could stay green.
Radiation prevents it from reproducing.
Note that the organisms must be in the water that flows to the uv sterilizer.
Theoretically uv radiation can kill viruses bacteria algae and protozoa.
The damage caused to the algae s dna through this light also causes them to flocculate clump together.
A uv sterilizer utilizes ultraviolet light which targets microscopic organisms like algae parasites and bacteria shortening the life cycle of the organism.
Algae can even affect the health of your fish depending on the type of algae.
In general larger organisms such as protozoa require a higher dose of uv radiation than smaller organisms such as bacteria.
The shorter the organism s life cycle the less likely it is to reproduce and cause a problem in your tank.
When operated correctly free floating microorganisms will be killed by the uv light.
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You can perform water changes to remove the dead algae and add some clearer water.
The single celled free flowing algae within your pond water is then exposed to these high levels of ultraviolet light.
The invisible light can kill viruses and pathogens like the one that causes covid 19 but experts are raising alarms about the potential safety risks.