I would remove the clown. As posted, ad the cocktail shrimp from the grocery store and let it rot. What I do is after the shrimp rots, I begin adding Bactervital for 3 days. This process usually takes 11/2 - 2 weeks if using the shrimp and bactervital from the time you put the shrimp in. As always, consistently test your paramiters to determine when the cycle is finished. The old fashioned method is to do what you've done and just let the tank run for about 6 weeks. Once again, test consistently to know when the cycle is finished. I'm certain there are many methods. Maybe do a search to figure out what is best for you.