My pics don't show the entire canister but maybe these will be helpful.
This picture shows how I have my media installed and shows the intake Q.D. (or double tap valve) installed close to the bottom of the filter.
This pic shows the output Q.D. connected with a longer piece of hose to the top of the canister. I made this hose longer to make maintenance easier when priming the filter.
Everyone has a different way of configuring their filter but I find this method works best for me.
This picture shows how I have my media installed and shows the intake Q.D. (or double tap valve) installed close to the bottom of the filter.

This pic shows the output Q.D. connected with a longer piece of hose to the top of the canister. I made this hose longer to make maintenance easier when priming the filter.

Everyone has a different way of configuring their filter but I find this method works best for me.