Well today i was going to set up my BioCube Oceanic Protein Skimmer that's mand for the BioCube but not sure if i'm doing this right . Here's the problem: it say's remove the cartridge from chamber 1 of the biocube. Using hanging clip on the reaction chamber, hang protein skimmer on the wall between chamber 1 and 2. Now here my problem do i keep the cartridge out or put it back in. Just make sure I'm doing this right :-/....Thank for any help.