Hello all, I’ve had my tank for about 3 months now. Plently of fish and corals in it, and plently of stuff to skim. I got the skimmer as a combo with the tank and lights. It’s a Aquatop Recife Eco Series skimmer made for the 24 gallon. No matter what I do I can’t get it produce much (never had any go into collection cup, sometimes a crusty brown layer at the top of it. I’ll post s picture of the model. Just wondering what I could do to make it skim better, or if I should just get a new skimmer. Thanks