How to connect overflow return to bulkhead?

[anjhof]

I have a slip bulkhead that i need to attach to my return pipe. My question is, should I use plumbers grease, PVC glue, etc to attach it? I also have silicon, but i'm not sure i want to put that inside the tank. Please let me know your thoughts.

 

[NCSUsalt]

just slip it down in there, don't use any permanent glue. it's better to be able to remove it later if necessary.

 

[iamwrasseman]

i 2nd that