Does anyone know what this is? Algae

[fishnugget1]

I have bright green and reddish brown algae intermixed with sand. Not Stringy. What is this & how do I get rid of. Salinity .027. DKH 8.2. Cal 440. Phoshate .03. Nitrate .05. Have had this for a while. Stable. Not getting much worse.
H

 

[Saltwatertaffy]

Looks to me like the sand just needs agitated. may get a sand sifting star and sand dwelling snails.

 

[Saltwatertaffy]

Or a diamond goby

 

[Nanoreefer4ever]

Just diatom increase flow in that area

 

[fishnugget1]

Had a goby & it died have 3 sand sifting stars

 

[Bret Brinkmann]

Can't tell the color, and thus get a positive ID, with blue light. Could be diatoms or cyanobacteria. Either way, cerith snails do a great job of keeping the sand clean. They also go on the rocks and glass. They come in multiple varieties. I find it best to keep multiple types. If you have enough sand you can consider a fighting conch. They stay in the sand.