Never it has its own CUC, and the fighting conks do a outstanding job with the rest. You have to put things cuc that can't really club the wall to get into the pumps
I deployed some and others volunteed (due to bad behavior in the display) but they'll clear a baffle but all my pumps are hight in my Refuguim so non of them get into the pump. But do to this I have a healthy growth of Coraline on the bottom of my Refuguim lol and it's so clean.