Hard-to-find wooden airstone perfect for protein skimmers and more! Coralife Wood Airstone generates a large volume of micro-bubbles excellent for use in BioCube Protein Skimmer and other airstone-driven protein skimmers. Quality mini limewood airstone also works well for general-purpose aquarium aeration. Coralife Wood Airstone measures 2" x 3/4" x 3/4" high.
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