I got a new pet goldfish. One of my friends also polished off a giant container of animal crackers that came in a foot tall, bear shaped container. I would really like to use the bear container as a home for my fish while it is little (especially since it is bigger than his current bowl). I rinsed out the bear container (without soap because I don't want to risk leaving any in) and added water. I am going to let the water sit so it reaches room temperature. As I wait for a day or two (just to be sure), I was hoping that someone could put my mind at ease. What would happen if there were to be any minuscule crumbs left from the crackers? Would it harm my fishy???? Please let me know.