cyanobacteria

[Flounder's Reef]

Is this cyanobacteria I did two back to back treatments of cyanobacteria no improvement any suggestions?

 

[brandon429]

how many gallons is the tank

 

[DaneGer21]

If it blows off the rocks in sheets/chunks, I’d say cyano

What type of flow?
What are your parameters?

 

[Flounder's Reef]

If it blows off the rocks in sheets/chunks, I’d say cyano

What type of flow?
What are your parameters?

250 gallon 3ft tall and 7ft long
Fish only system

Alkalinity 10.1
Phosphate. 03
Nitrate 20ppm

I't does blow off

 

[RGBAquatics]

How old is the tank setup? I don't see much purple algae so I'm guessing it's fairly new?