How long should the filter and oxygen adding device of the fish tank open in a day? In principle, the filter cannot be closed for 24 hours,The oxygen pump can see the situation,When the temperature is high or can be opened within 2 hours after feeding,If it affects your rest at night, if the fish does not float and does not breathe quickly,Then you can turn off the filter when the temperature is high or the fish is in short breath. it can't be turned off from the beginning,Because nitrobacteria need water,The water will start to die in four hours,All will die in 24 hours.Will spoil the water.The oxygen pump can be 3-a day for ordinary fish as long as the filter is open-Four hours,It takes 24 hours for high-oxygen fish to open.
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I heard that the water purifier can filter some metal substances in the water? Is it true? Water is an indispensable thing in daily life. in recent years, frequent water pollution incidents and increasing attention to drinking water. More and more people are looking for ways to improve the water quality, so the water purifier has become popular. However, there are many kinds of water purifiers on the market at present, and the prices are different, making consumers dazzling. So, how should consumers choose water purifier? To this end, experts remind: Do not superstitious about foreign brands, but consult documents or copies of their 'health permit approval documents for imported drinking water hygiene and safety products', customs import documents, import commodity inspection certificates, etc, do not be confused by fake and shoddy products and choose from their own water quality.Does the water purifier really filter the tap water into mineral water or purified water that can be drunk directly, safer
