Algae id

[jp_75]

Can someone help me identify this? It’s bright green and only on my sandbed. Thx
Nitrate :7
Phosphate :0.05

 

[Dan_P]

Can someone help me identify this? It’s bright green and only on my sandbed. Thx
Nitrate :7
Phosphate :0.05

The photo is not in focus. I can’t see any structure. If it looks like a green skin on top of the sand, cyanobacteria is my guess. If it looks like each sand grain is green, then I guess its a micro algae.

 

[jp_75]

Can cyano be green?

 

[Dan_P]

Can cyano be green?

Yes. It can appear red and then turn green and vice versa. Sometimes the red is almost a violet.

 

[jp_75]

Now need to figure out a treatment…