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在室外建0.5—1平方米、深50—80厘米的水泥池。往池中倒入30—50厘米深的雨水,再混入少量池水或田水,使水池里生长单胞藻与水蚤。如果池口在空旷处,夏季日照时间很长,需在池上搭上三分之一透光的荫棚,也可不用支柱,直接把棚顶搁在池口上。冬季日照短,气温低时,应掀弃棚顶。如果池子建于墙角,即可终年不必遮荫。准备就绪后,到郊外净水处(如有泉水的水库)寻找水螅,采到后将其放入盛有雨水的广口瓶内,让水螅附着在瓶壁上,再捞取少量水蚤投
Built in the outdoor 0.5-1 square meters, 50-80 cm deep pool of cement. Pour 30-50 cm of rainwater into the pool and mix in a small amount of pool water or field water to make Cytoseline and Daphnia in the pool grow. If the pool in the open space, the summer sunshine time is very long, you need to catch a third of the pool on the transparent shade, but also without struts directly to the roof resting on the pool mouth. Winter sunshine short, low temperature, should be abandoned roof. If the pool built in the corner, you can shade throughout the year. When ready, to the suburbs of water purification (such as springs reservoirs) looking for water, when it is taken into the rain jar, let the water 螅 attached to the bottle wall, and then retrieve a small amount of water flea investment