If you do remove the gravel the problem could come back again, do you over feed, have you an airstone, where is the tank placed like is it near direct sunlight, and have you got room in the tank for some algae eater.
What type of algae do you think you have? We can help get rid of it better if we know what we are looking at?
Check out the plant forum for recommended treatments, Lots are posted.
I highly recommend a bristlenose plec or two. they cleared up my Massive hair algae problem in less than a week, and are now being supplemented with algae tabs. I put two in a 55 gal.