Micro fittings for regulating air flow through standard airline tubing. Use Two Little Fishies Micro Ball Valves to adjust airflow into aquarium devices such as airstones, filters, protein skimmers, ornaments, and more. Also great for low-pressure liquid feed lines for metering pumps, fish display holding cubicles, fertilizing systems, calcium reactors, and drip irrigation of water gardens and paludariums. Barbed ends fit 3/16" ID standard airline tubing. Six pack.
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Please click on "More Information" for how increased aeration helps create a healthy aquarium environment.