iVol

A few sheep in a 10x10 pen will eat the grass faster than it can grow.

@Eric Farley, in order to get my slime farm to produce slimes I had to set my world to peaceful and then back to hard to clear out all mobs. I had not had a single slime in over 100 hours of play. After setting to peaceful and back to hard I was able to get a few slimes trickling in (still a very slow rate) and collected about 4 stacks of slime balls in about 4 hours. I should also note that I did not leave the area during this time because I didn't want to load mobs in other chunks. I also had to be above level 31 for them to spawn on the one platform at level 6.