I had this in my planted tank and have managed to mostly get rid of it now.

Ive introduced about 20 Amanoi shrimps into the tank that spend all day cleaning my hair grass and plants of the algae.

I also found that I was dosing too much fertiliser. I was putting in 5ml of Sera Florena a week to get a decent reading of Fe (iron).

I did a test and didnt put any fert in and found that the algae stopped growing and seemed to be getting shorter on the tufts and dieing back.

Obviously I couldnt not fertilise as the plants would suffer so ive started adding 0.25 - 0.5ml of fert through a syringe once a day when I feed the fish

Ive foudn this has kept the algae down to almost nothing (although its still there) and the plants are happily pearling and growing well.

Hope this helps

Stu