BH100F reef octopus question {unexplained parts]

[smaug1]

Mine has parts that arent even shown in the crappy diagram! It is lacking parts that ARE shown,namely the outlet elbow. I have this part that is round and clear with circular cut sections of black sponge and some sort of fitting that fits in the outlet T. Has anyone recently bought this model? I assume it is a new revision that they didnt bother uprgrading the directions for. I can post some pics of the unexplained parts if anyone has the desire to help.
Here is a pic. Circled in black is the fitting on top of the t fitting for the returm,the orange arrow points to the section of T that the return elbow should go [shown in crappy direcs] I assume Im missing the return but the circled in black fitting isnt even shown in direcs.

 

[Cliff519]

I have never used this skimmer before so I'm afread I can't offer much in the way of help. I know there should be someone here that has the answere for you Smaug.

Good luck with the skimmer

 

[smaug1]

Thanks for the bump Cliff! I see you are always willing to help me even here.

 

[Cliff519]

Good luck Smaug, keep us posted

 

[smaug1]

The part is a revision to the old outflow elbow fitting. It is to reduce the amount of microbubbles returning to tank. It is effective I must say. Now you all know,,,,,,,,,,,thanks to all the intrepid who ventured some assistance here! IOW,Thank you Cliff.