Is this black beard algae? This is a 55 gallon tank that's been cycled for close to a year. Nitrates hover around 5-10. A-0 N-0. I need to know its definitely BBA so I'll know how to treat it. Some say more light, some say less. I've only got one side of tank lit for several days now, and have the other side down to 9 hours now. Bio Sorb? Will that help? Its a BEAR to remove!