Green grass

[cichlidguy22]

what is this stuff looks like grass? is this god or bad??? do ned to get a lawnmower???

 

[krishj39]

it is probably hair algae, which is basically bad. Personally, I don't think it looks bad, as long as it isn't taking over everything. however, it may be maiden's hair, which is a macro algae and a good thing. is it popping up here and there, if it is spreading quickly it is hair algae? if it is light green then it may be maidens' hair, but if it is dark green it is probably hair algae. anyway, sorry for the ramble, but you didn't give too much info to work with.