I have a big piece of drift wood in my tank and a smaller one the big piece in covered in beard algae and its been an on going issue for the past couple months have tried everything but it just keeps getting worse and now it's all over my tank from the fish knocking it off the wood ,it's a real pain in the ass to clean too. I took it out of the tank but its to big to boil is there anything else I can do with out chemicals to try to clean it off the wood and stop it from growing?