What are the "three open" and "two not open" principles of aerator?
According to the law of diurnal variation of dissolved oxygen in still water ponds, the principle of “three open†and “two not open†should be adhered to when starting the aerator.
"Three open" means:
1 Sunny noon or afternoon 2: 00 to 3: 00 boot 30 minutes to 60 minutes, so that the upper layer of supersaturated dissolved oxygen transfer to the lower layer, reducing oxygen escape, to solve the problem of oxygen debt in advance.
2 Cloudy days start the next morning at 3:00-5:00 and start to sunrise to prevent floating heads.
3 When there are severe floating heads due to overcast rain or due to water and fertilizers, fish and other reasons, it is generally switched on before sunrise and before sunrise.
"Two not open" means:
1 Do not turn on the water when the dissolved oxygen is high in the evening, avoid prolonging the time of oxygen consumption and cause the fish pond to float in advance.
2 Do not start at noon on rainy days, because the dissolved oxygen in the pool will not be oversaturated.
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