PURPOSE: A fish cultivating method capable of enhancing survival rate of fishes a purifying and activating agent of farming water used for the same are provided to promote purification and activation of farming water suitable for cultivation of fishes.CONSTITUTION: A fish cultivating method comprises the following steps: promoting purification and activation of farming water by putting a purifying agent to a cultivating place of fishes and giving powder of humic acid or/and silicate to fodder. A manufacturing method of a purifying agent of farming water comprises the following step: mixing or impregnating humic acid to sintered body of the powder or silicate powder.COPYRIGHT KIPO 2013본 발명은, 새우, 해삼, 도미 등의 많은 어개류의 양식에 적합한 사육수의 정화 및 활성화, 나아가서는, 우수한 양식방법을 제공하는 것을 과제로 한다.상기의 과제를 해결하기 위해, 본 발명은, 규산염 광물의 분말 또는 상기 분말의 소성체에, 부식산을 혼합 또는 함침시킨 것을 특징으로 한다.
