Green Algae ID with microscope pic

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reefrider777

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A friend is dealing with this green algae that is on the sand bed. Any help would be appreciated. Here is a pic of the sand and also a pic from the microscope.

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IMG_2340.jpeg
 

taricha

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They haven't been reported to be a long term nuisance in the aquarium. (Though I'm open to new info)
I expect that this is a short-lived phase in a maturing tank.
 
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reefrider777

reefrider777

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They haven't been reported to be a long term nuisance in the aquarium. (Though I'm open to new info)
I expect that this is a short-lived phase in a maturing tank.
Hmmmm...tank has been running for 8 years now. Maybe UV?
 
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