Originally Posted by fishieness
dont bother. it would probably hurt your corals more than your algae. how are they hurting them? jsut shading from light?
we need more specs about your tank, parameters, lighting, age of bulbs, stock list, size tank, ect.
the best thing you can do is remove all hair algae you see (taking the rocks out and using a toothbrush works well) and lowering nutrients via frequent water changes and feeding less
For the hair algae, can't you just pull it off? Or perhapse get a small guy that eats hair algae?