Once killed the algae remains in the tank so the water could stay green.
Does uv light kill algae.
Just to explain what this light does it connects through the plumbing in your pond and the water cycles through the closed tube for the uv light the bulb itself is protected from the water.
Note that the organisms must be in the water that flows to the uv sterilizer.
A uv sterilizer utilizes ultraviolet light which targets microscopic organisms like algae parasites and bacteria shortening the life cycle of the organism.
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.
This light destroys their dna and kills them.
Theoretically uv radiation can kill viruses bacteria algae and protozoa.
Size and type of organism.
The uv lights kill the algae returning clear water to the pond.
Free floating microalgae are also killed by uv systems.
The damage caused to the algae s dna through this light also causes them to flocculate clump together.
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Algae can even affect the health of your fish depending on the type of algae.
You can perform water changes to remove the dead algae and add some clearer water.
The shorter the organism s life cycle the less likely it is to reproduce and cause a problem in your tank.
The single celled free flowing algae within your pond water is then exposed to these high levels of ultraviolet light.
When operated correctly free floating microorganisms will be killed by the uv light.
Algae can be extremely problematic for both beginner and experience aquarists so everyone can benefit from an aquarium sterilizer.
Other factors include excess nutrients and high light levels.
In general larger organisms such as protozoa require a higher dose of uv radiation than smaller organisms such as bacteria.
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.