一、也谈硬度在观赏鱼、水草等饲养的老手中几乎无人不知道有关水硬度的问题,论起来更是头头是道。每个人又根据自己的养殖经验各有一套实践理论。笔者这里不敢班门弄斧,大谈一二三四。只是就所知所学,把一些概念理清一些,希望对观赏水族有兴趣的人有所帮助。 First, also talk about hardness In the ornamental fish, aquatic plants and other rearing of the hands of almost no one do not know the problem of water hardness, the more on the road is. Everyone also has a set of practical theories based on their own breeding experience. I do not dare to go all out here, talked about two three four. Just know what to learn, to clarify some of the concepts, hope to watch aquarium interested people help.