What kind of algae is this?

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biofish

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I’ve never seen this before in my tanks and it just started growing in my planted 55 gallon tank. It’s not spreading at an overly alarming rate but it’s still really gross. Looks like a plasma or slime. It’s only on the sand.
 

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Rocky998

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I'm usually ok with algae but that looks sick... Like a bad sick, gross sick. I have no idea what type of anything that is!
 

Rocky998

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Look at it on the sand. That looks just like blue-green algae to me.
Seems too bright and too neon-like. It also looks thick and slimy. I have never seen bga like that if it is.
It looks weird
 

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