Coralife 8524 Limewood Mini Airstone for Biocube Protein Skimmer, Black

Circulation pumps simulates natural river and reef currents by continuously circulating water. Efficient and easy to use. For use in 100-gallon aquariums. Whisper air pumps can handle the aeration needs of aquariums from 10 to 100 gallons. Works efficiently in higher head height applications. Heavy-duty construction provides strength and corrosion resistance. Ideal for use in skimmer filters and pondless waterfall applications.