Bad Hair Algae

[Reefer Rob]

If you have a small tank you need to be careful not to raise the temperature too much. In any case just do a small patch at a time. The rock will be bone white for a while after, but coralline will re-establish again. Protect your corals with a shield such as an oyster shell, but the water isn't really that warm except right where you're basting. I would start by pulling as much out as you can, without letting any get loose in the water. When it's nice and short baste what remains on the rock.