I have a 29g bio cube and currently have the skimmer made by Oceanic for it. Is there another skimmer that I can use? So far I don't like the way this skimmer is working. It's not producing enough bubbles to create any foam in the collection cup. I think the air pump is under rated for the skimmer. Does the skimmer need time to "break-in"? BTW I just got done cycling the tank and put in the skimmer. I'm getting my fish next week since it's the only time that I have off.