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.
What kind of algae is this?
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CaptainBarnicles
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That's cyanobacteria, aka blue-green algae
No... That is no bga...
Bga is what's on the rock in my profile picture
100% Blue-green cyanobacteria.
Large water changes will help get rid of it. Spot remove it.
Large water changes will help get rid of it. Spot remove it.
Really?? Are you not seeing the pictures???
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Guess a sniff check will be in order. Wish me luck 
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
Thats one sure wayGuess a sniff check will be in order. Wish me luck
CaptainBarnicles
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BGA is slimy and you can siphon it out in big sheets
Yes that's bga! But that's not what I see in the pics...
Good luck and don't kill yourself by doing thatGuess a sniff check will be in order. Wish me luck
I just had this stuff in both my 20 and my 40. Looked just like that.
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