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Airline Tubing for Aquariums

Aquarium airline tubing is typically connected to an air pump on one end and to a diffuser, such as an air stone, on the other. Silicone tubing from Cobalt Aquatics is a premium option that usually lasts longer. Standard aquarium airline tubing diameter is 3/16" inner diameter and ¼"" outer diameter. Note that most protein skimmers use a wider 3/8" tubing, so you will need to look under Skimmer Parts and Skimmer Accessories for protein skimmer airline tubing.

If you are looking for aquarium co2 tubing, look under the co2 tubing section. You can also find ozone safe tubing in the UV Sterilizers and Ozone section.
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