Haven't had to address algae on my coco yet(only 2 runs with the coco). But I do get it almost all the time with some my perlite only pots. Go figure! Your grow is gonna rock.
Do you leave your algae alone or do you get rid of it?
The internet seems split on whether it's harmful or not. I didn't like the way it looked. It's gross and it was growing fast.
I just finished the process getting rid of it. I dug it out, fed the seedlings nutes and sprayed a H202 solution on the coco.