Ok. Thanks, Rocksor. I looked for red wigglers at PetSmart today. They were sold out. I think I will just get a giant thing of tilapia, and red wigglers and feed a few times a week. The largest one is approaching 3.5 inches. Smallest one is 2.5. They are large enough as to not fit EVEN CLOSE in his mouth. Plus, they bully him. They dive bomb him. He would never eat one, because they are so fast, and he is not the brightest, you know, fitting into a 3 inch moon rock, and trying to swim up the water fall of the filter