Can you give a better description? Do you have any algae-grazers in the tank? Some algae you would want to get rid of-bubble algae(tangs will keep it managed or do it by hand). I need a description to help you better. --Bob
You're probably talking about macroalgae, specifically caulerpa. If you think they're overwhelming your tank, trim them. How about some tangs, I heard they eat macroalgae too. What's nice about caulerpa is that it uses up the nitrates in your water. Send me some, he he.