From FrugalReef

Hair algae looks like a soft mat of green fur growing on just about anything. It can grow very fast, and most people consider it a pest. Notable creatures that eat hair algae include Lawnmower Blennys, Turbo Snails, and Sea Urchins.

Green hair algae requires high levels of phosphate to grow, above .05 mg/L. For phosphate reduction techniques see Algae Control.

[edit] See Also

• Algae Control