I have the BRS canister. I’ve watched the videos but I can’t tell if the line from the skimmer air intake goes to the ‘in’ port and does the line from the top of the skimmer go to the ‘out’ ?Which reactor do you have?
The BRS should have labels indicated IN vs OUT.
For the Icecap, the outside port goes to your skimmer intake. The inside port (on the Lid) goes to skimmer recirculation or just ambient air.