Fuzzy algae on the back wall

[Titleist1964]

I have this fuzzy style algae that grows on my black wall. I wasn't cleaning it because I want coralline to build up there, I do have patches of it but this stuff is thick and nasty and taking over.

 

[WheatToast]

Could you get images under white light (ex. with a flashlight)?

 

[Jo P White]

It’s probably green hair algae, I’ve had the same issue

 

[Titleist1964]

It’s probably green hair algae, I’ve had the same issue

Seems like it won't grow where the powerhead is

 

[WheatToast]

Looks too low-lying and irregular to be green hair algae, in my opinion. My tentative guess would be a mixture of detritus and diatoms.

 

[Titleist1964]

Thanks, It's the that same brownish film that grows on the glas, I clean my glass everyday, I jut thought by not it would become coralline algae. All good now, I just wiped it off like the glass.