I have completed my first treatment of Excel today. Hopefully this will help.
This is the other type of algae I'm dealing with. Its been there for 2 months. My tank is about 2.5 months old, so it may be diatoms, but I dont read much about stringy diatoms.
They blow away easily with a wave of your hand, or a turkey baster, but come back within hours. Not sure what I can do besides wait it out and hopefully it goes away