Mega Flow return question

I am installing the Mega Flow drain and return kit in my new 120 and I know not to glue the drain pipes for ease of cleaning and or adjustment. My question is the return lines, are they to be glued to the bulkhead and the elbow at the top?

 

I wouldn't...I use threaded unions where-ever possible....hope for the best....plan for the worst. : )
LG

 

I am talking about the PVC tubes that are inside the overflow box. I should have been more specific.

 

I glue everything except where the drain meets the bulkhead in the corner over flow. Luna

 

Thats what I thought. Thanks

 

I glued mine beacause it was too loose . THe directions said dont but hey, it was loose.

To remove, I can still cut the pvc from under and remove the nut and remove the unit so its not permenent.

Cheers