It depends on what kind of zoos, and what kind of mushrooms. Some seem to bother others more than others. I haven't kept yellow polyps so I can't really give you any input about them. I've got zoos and mushrooms and green star polyps all growing right up against one another with no problem, but I've had other mushrooms that were bothered by the star polyps, and/or the zoos, and vice-versa.
B