Lots of good info here, including pictures to help you identify which type of algae you have, as well as info about what causes that type of algae and how you can address it. I'm guessing it's black beard algae but can't say for sure without a picture, or a comparison with the pics below.
Aquarium Algae ID (updated)
In general, I am against any approach to algae that uses algae-killing chemicals. Too much chance of something going wrong. Plus the fact that, more likely than not, it is only a matter of time before the algae just comes back. A much better approach to aquarium algae is figuring out WHY the algae is growing, and then addressing the underlying cause.
Too much light? Too little? Too much nitrogen? Too little? Too much phosphorus? Too little? Lack of trace nutrients? Too high an organic load in the water column? Etc etc etc.
Once you can identify which type of algae you are struggling with, we will have a much better idea how to help you. 90% of the time, all it takes is adjusting either your lighting habits, getting your nutrients balanced by dosing the appropriate fertilizer(s), or both--sometimes helped by buying an appropriate algae-eating fish for your tank. Once you figure out your algae type, you might want to create a separate thread specifically asking about it, rather than "bury" a question in the midst of the "member introductions" forum here.