What is this algea

[brownsalt92]

What is this green algea? It is all over rocks power head frag plugs. I remove it by hand scrub rocks with tooth brush and it comes back a few days later. No direct sunlight hits the tank. Would a uv sterilizer help rid my tank of this? I'm close to just taking this tank Down.

 

[kevantheman35]

Looks like a form of green slime algae. I have delt with this a time or two and can tell you that it can do well in low nutrient water which makes it difficult to fight off.

 

[brownsalt92]

So what would be the best thing to try to rid this algae problem bare bottom?

 

[Zane]

Check this out.
https://www.reefcleaners.org/nuisance-algae-id-guide

 

[Reefing Madness]

Green Cyano Algae
From the looks of it, you have no flow in your tank. Get your flow above 20x your tank volume.

 

[Newb73]

I have so much flow in my tank I can't keep sand...reduced my flow greatly and the places where the sand piled up (I guess "low flow") so goes the spots of algae.......

.......Reefing...

Nonetheless you have it all over, I agree with the flow approach.

 

[Zane]

Have you tested your water source for phosphate?

 

[human]

How long has the tank been running? I'd double check all your parameters, especially phosphate. Maybe try siphoning it off the sand and rocks, keep the lights off for a few days ( corals will be fine ) and doing a water change to get the excess nutrients down. If it is cyano the absence of light for a few days will kill it, but if you don't fix what it's feeding off of it'll come back.