Water clarifier-A may play an important role in the increase of protozoa numbers, although such a role was not so obvious with rotifer and crustacean zooplankton.

• 饵料生物方面，尽管生物水净化剂对大型浮游动物（轮虫和浮游甲壳动物）的直接影响不明显，但它对原生动物有明显的促进作用。