Common name: Polysiphonia elongata

General information

Polysiphonia elongata is a species of red algae that is often found in marine aquariums, particularly in refugiums where it serves as a natural filter and nutrient exporter. It is characterized by its filamentous, bushy appearance and deep red to burgundy coloration. This algae is not only beneficial for water quality but also provides a natural and attractive element to the tank's aesthetic.

Care

Caring for Polysiphonia elongata involves maintaining clean water with adequate flow and nutrient levels. It thrives in a range of lighting conditions, from moderate to high intensity. Regular pruning may be necessary to prevent it from overgrowing and potentially shading other inhabitants of the aquarium.

Symbiosis

While not hosting larger organisms like fish or invertebrates, Polysiphonia elongata can provide microhabitats for a variety of small crustaceans and microfauna. These tiny creatures find refuge among the algae's dense filaments and contribute to a balanced ecosystem within the aquarium.

Habitat

Polysiphonia elongata is commonly found in intertidal zones and shallow waters, where it attaches to rocks, shells, or other hard substrates. In the aquarium, it can be easily attached to live rock or placed in a refugium where it can grow and aid in nutrient control.