fighting algee for more then a year with no success

[Hugster78]

Hi All,
I am fighting this algee for more then a year with no success (it's a stringy brown algee), my nitrates are 8 and phosphate 0.
I have mexican Turboes that will not tuch it, my tank is 20G so tanks / foxface are not relevant.
Any help / advice will be appriciate.

I have this!! How did your attempts at removing go??