发生“清水病”,主要原因是池中枝角类,桡足类,蚤类等大型浮游动物多,大量摄食浮游植物,加之雨天池中过多增加新水,对大型浮游动物生长有利,而对浮游植物生长不利,破坏了池中的生态平衡,无形形成了“清水病”。一般说来,此病在多天阴雨,沙底鱼塘、鱼池静水等三种情况下发生较多。 Occurrence of “clear water disease”, mainly due to the pool of cladocera, copepods, fleas and other large zooplankton, a large number of phytoplankton ingestion, coupled with the excessive rain in the pool to increase the new water, the growth of large zooplankton beneficial, and Unfavorable to the growth of phytoplankton, destroyed the ecological balance in the pool, invisible formed a “clear water disease.” In general, the disease occurred in more rainy days, sand bottom fish ponds, fish ponds and other three cases of hydrostatic occurred more.