If you want help you need to provide a lot more information. You have a problem of excess nutrients. The trick for ridding your tank of this algae is to make it difficult to grow. (Anything less is just a band-aide).
Post your pH, Alk, Calc, and Mag, and nitrate levels. Size tank, amount of lr, dsb (or not), type of skimmer, number of fish, how often you feed, whether or not you have a fuge. How often do you do water changes? Do you use "tap" or RODI?
If you provide all this needed information, people will help you get to the source of the problem.