Help! Brown algae...

[l2ob]

Below you will see images of what seems to be taking over my aquarium in such a way it seems to be even chocking my zoanthids. I blow it off with a turkey blaster around the few corals i do have every couple days but it comes back.

I run biopellets, skimmer and a bag of chemipure blue. I also do weekly water changes of 5 gallons.

Any idea of what it is and how to get rid of it?

 

[sfin52]

What are your parameters please include nitrates and phospahtes.

 

[l2ob]

Phosphate ~ 1 ppm
Nitrate at ~ 0 ppm

 

[ChinaHejiaoshou]

• 这看起来像甲藻
  

Translation from Chinese: This looks like dinoflagellate

~Bruce, Moderation Team

 

[Reefing Madness]

Looks like a bad case of Diatoms. How old is the tank? Whats your flow?

 

[l2ob]

Looks like a bad case of Diatoms. How old is the tank? Whats your flow?

65 gallon aquarium, MP10 for flow at max speed and aquarium is about 1 year old

 

[Reefing Madness]

Anything new in the tank? How much of that flow is hitting the sand bed?

 

[Michael Naegeli]

I would bring Nitrates up. Phos w no Nitrates can be the cause of this.