养鱼先养水，这是众多养殖户都懂的道理。目前的养殖方式大多是高密度、集约化，它在提高产量、增加收益的同时，必然引起水质的迅速恶化。如何解决养殖水体的水质改善问题？如何解决养殖水体的二次污染？如何防治层出不穷的病原微生物，减少死亡，这是水生生物多年来探讨的一 Fish first raise water, which is understood by many farmers truth. The current breeding methods are mostly high-density, intensive, it is to increase production, increase revenue, inevitably lead to the rapid deterioration of water quality. How to solve the problem of aquaculture water quality improvement? How to solve the secondary pollution of aquaculture water? How to prevent and treat an endless stream of pathogenic microorganisms and reduce death, which is one of the aquatic organisms discussed for many years