Brown Algae On zoa

[Reef keeper]

Hello,

So I have been having a brown film forming on my zoas. They will then close up for a while.

My phosphates are .17
Salinity .026
Nitrates are 0

I was reading some people saying it is a fungal infection and some saying bacterial so I was hoping to get a treatment plan to save the zoas being effected.

Thanks!

 

[tbrown]

It could very well be Dinos forming due to 0 nitrates, but it could be other things as well. Do you have any pictures?

 

[Reef keeper]

Here’s a video from a sample
View attachment 20251007_183049_C1106E28-AAA2-43C8-9812-8DEE42D71C4E.mov

 

[Johnd651]

Age of tank?

 

[Reef keeper]

Age of tank?

Little under a year