How to remove Black Spot Algae?

[am1698]

Hi Guys,
I got Black Spot Algae recently and seems spreading out.
After I changed to use Tropica Plant Nutrition Liquid, BSA appeared.
Anyone here knows what does it causes?
And someone here can probably point me how to get rid this algae?

 

[VaughnH]

I'm not sure what black spot algae is, unless it is black brush algae, the only black looking algae I know about. If that is what you have, it seems to show up when the CO2 is either inconsistent or is just too low, and the light intensity is high.

I am proud to say I am very, very good at growing black brush algae. I'm thinking of an aquascape built around this beautiful algae. (Maybe if I can convince myself that I want it, it will go away.)

 

[am1698]

I'm not sure what black spot algae is, unless it is black brush algae...

Thanks VaughnH.
Fixed. It is a early stage of GSA.