I just set up my new reef octopus skimmer 2 days ago. I see that it is starting to pull out dissolved organic s , but its mostly in the neck (yellowish bubbles). Also when I adjust the gate valve I don't really notice a change so my questions are . Once it breaks in which could be 3 weeks will the bubbles make it to the cup. Also when adjusting the gate valve what should I be looking for and will I not notice a change til it breaks in. And finally do I need to glue the PVC
together when the water exits ?