Correct, mine is a few inches down. You want it to be low enough it doesn't collect at the top but high enough to have a long dissolve time.
Sorry for the delay on pics, the weekend got away from me. Hope these make up for it? Let me know if you have any more questions! My set up certainly isn't perfect but its working well for me so far.
Btw, the black hose is the CO2 line, it goes in right under where the rubber band is at.
Yeah, I'm using the XP4. If I remember correctly the ID is 1/2". I had to heat it and stretch it over the 3/4" barbs. I did buy some extra hose as well, I think that was 5/8".



You may need to tape the threads. I tried getting away with no tape on my barbs when I first screwed them on however ran into leaks on both sides. Something to consider!