Easy Algae removal method for rough surface?

[potatocouch]

I have this back tank of mine where it has grown coralline algae and made the surface quite rough.

On top of that coralline, there this assorted bad algae, the likes of GHA ..

I was thinking of scrubbing it using magic eraser but come to think of it, it may not work as the eraser will be torn when I swipe it across the coralline surface.

If I scrub it using the wall glass scrubber, it will release the algae to water columns and only get captured on rock crevices, so beat the purpose, i have to clean the rock afterwards.

Can you think of the easiest (manual) way to dispose these annoying algae? Note that water are currently being treated (dosing in place).

The area is highlighted in red circle below.

 

[Jeepguy242]

Syphon and brush

 

[potatocouch]

@Jeepguy242 something like this?

 

[Jeepguy242]

@Jeepguy242 something like this?

That would work. I have a stiff bristle nylon brush taped to a 3/8 inch viynal tube. I start a syphon and start scrubbing. The syphon tube runs down to a filter sock in my sump that catches the algae as I scrub

 

[potatocouch]

@Jeepguy242 good thinking ... put socks in the return for approx maybe 5 days .. then take it out.