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What is this algae growing in my refugium?

ASIN28

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Hey all,
Recently just started a refugium and just saw this nasty looks black string algae growing inside of it. I’m new to refugium and just had a few questions:
Does the macro algae look normal?
Is it normal for the refugium to turn this green/brown color?
What is this algae growing in the sump?
Thank you

DF1E6284-2F93-443C-B69A-23476886D861.jpeg CA3E4426-294A-4B7B-A9F0-45013EA50D86.jpeg 44BCE983-0CFA-4C69-A930-62A9F7C7E062.jpeg
 

JGT

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Hey all,
Recently just started a refugium and just saw this nasty looks black string algae growing inside of it. I’m new to refugium and just had a few questions:
Does the macro algae look normal?
Is it normal for the refugium to turn this green/brown color?
What is this algae growing in the sump?
Thank you

DF1E6284-2F93-443C-B69A-23476886D861.jpeg CA3E4426-294A-4B7B-A9F0-45013EA50D86.jpeg 44BCE983-0CFA-4C69-A930-62A9F7C7E062.jpeg
Looks like some hair algae. Not uncommon. You’ve now got a fudge and an algae scrubber all in one.:)
 

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