jwh0818
Aquarium Advice Addict
Im pretty sure you don't have BBA. The all feared Black Beard Algae looks like a dark green hairgrass clump sort of, from what I know. I may be wrong, but I think you have a simpler hair algae. It is long, light green, stringy(or looks like thin green hair), and is loosely anchored. I have a strand i just got rid of. It catches lots of detritus and got quite long in about a week of me wondering what it was. Anyway, just pulling i out should be fine.
Thats not bba either. Bba looks like a dark green thin blanket. Thst you showed is just hairline algae