Board Thread:Questions and Answers/@comment-16886934-20130830120153/@comment-11494103-20130830123231

You can send monsters directly to the Wubbox from the incubator without having to place them on the island first. Another thing, it makes no difference if you feed the Wubbox a level 15 monster or level one monster, so best to breed all new level one monsters to feed the Wubbox.