please help with id

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gfishguy56

Aquarium Advice Activist
Joined
Sep 5, 2003
Messages
172
Location
Ft. Lauderdale, Fl
Can someone please tell me what this bubble type algae is? It's brown and full of water inside and it's starting to spread in my aquarium. I've pulled it off the rocks and overflow, but it just keeps coming back. Is there any creature I could buy that eats this?
Nitrates are a little high around 25-30, and all other parameters in check. I have a Red Sea XXL750 and it's been up and running for 9 months.
In all my 30 years in the saltwater hobby, this is the first time dealing with this.
All help is appreciated.
 

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Cyanobacteria. Forms in sheets in low flow areas of your tank when there are nutrients in the water column.
It's just that low flow spot in your tank where it is and feeding off the nitrates you pointed out most likely.
 
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