#algae

My shrimp have been sick and I want to know if this is hurting them or if they just arent keeping up with it.

This black algae has been in my dad's 55 gallon for a long time. Algae doesn't bother him, but for me it does. I was wondering if it is bad for anything. Anyone know what type it is? (I think it may be black beard algae)? What would be the best way to remove it, maybe hydrogen peroxide bath? I...