Can someone id this brown algae?

[fishmonkey]

I’ve had this brown spot for a while now and it’s growing slowly. It’s smooth and I feel like I somewhat peel it off.

 

[3429810]

Diatoms possibly. How old is the tank? Definitely seeing lots of bubble algae to.

 

[J_Gard88]

I've been dealing with something very similar. Still haven't got to the bottom of it. I believe its dinoflagellates.

 

[fishmonkey]

Diatoms possibly. How old is the tank? Definitely seeing lots of bubble algae to.

A year and a few months.

I kinda gave up on removing all the bubble algae and remove it every few months.

 

[fishmonkey]

A year and a few months.

I kinda gave up on removing all the bubble algae and remove it every few months.

So it’s not brown coralline or lobophora right?