Bulkhead Barb Adapter (1 Inch) Zoanthids & Palys Rinse the test tube before

Rinse the test tube before use

dose for the amount of new water being added

confirm even airflow through every diffuser and adjust individual valves gradually

It grows to 32 inches

The 1 inch slip version is a practical option for common aquarium returns

Bulkhead Barb Adapter (1 Inch) Zoanthids & Palys Rinse the test tube beforeBulkhead Barb Adapter (1 Inch) Bulkhead Barb Adapter (1 Inch) is a heavy walled PVC straight adapter for connecting flexible tubing to compatible aquarium bulkhead kit plumbing. It is a practical option for aquarium returns, drains, sump lines, reservoirs, and filtration systems that use flexible tubing instead of rigid pipe. 1 Inch Straight Barb Adapter for Aquarium Plumbing The 1 inch size is useful for larger plumbing runs where a direct flexible