Parts of a Bulkhead
A bulkhead is a plastic device that inserts into a hole that has been drilled in the aquarium to allow an external plumbing connection. The bulkhead makes the hole water proof and allows two connections for the plumbing -- A connection inside the aquarium and an external connection. Bulkheads are either threaded or slip. Threaded means a device will screw into the bulkhead whereas a slip connection means a device will just slide into the bulkhead. If you purchase a threaded Durso Standpipe and you have a slip bulkhead, you will not be able to insert the standpipe. Be careful which type you order. |
Typical Looking Bulkhead
The internal connection is where the Durso Standpipe will be attached. The external connection is for the drain pump to your sump. Typically a "Reef Ready" aquarium implies that the tank has bulkheads. |