What color is the algae? Some algae is natural in a newer tank. Some types can be fixed by increasing your light (power, not time). What power lighting do you have now and how long are the lights on? What is your plan for the tank (and what size) in the end? If you can, test your tank water for phosphates or bring a sample to your LFS and ask them to test it for you. High phosphates can cause some algae problems. This was the case in my tank. If you can, post test levels like nitrates and phosphates and any other tests you have access to.
Colin