What are raw materials for domestic electrical appliances production?
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What device does the fish tank have to change water? There is no water change device,But you can install the filter system (necessary) to reduce the frequency of your water change,The filtration system has two aspects of attention to flow and volume,The flow needs a fish tank suitable for you,The larger the volume, the better,There are many filter materials with large volume,Biochemical filtration is strong,Good water quality.The current filtration is generally filter cartridge, upper filter, bottom filter, back filter, side filter, internal filter,Each has advantages and disadvantages,It is best to choose the right way to filter.I recommend you to go to the forum where you raise fish first to learn,Many FISH3000, SONIC2000, CTA South American aquarium .Water is not rotten.

What is the use of the filter, why install the filter? Filter is an indispensable device in the pipeline of conveying media,It is usually installed in the inlet end of the pressure reducing valve, pressure relief valve, fixed water level valve, and other equipment of the square filter.The filter consists of the cylinder, stainless steel filter screen, sewage discharge part, transmission device and electrical control part.After the water to be treated passes through the filter cartridge of the filter screen,Its impurities are blocked,When cleaning is needed,Just remove the removable cartridge,After processing, you can reload it,Therefore,It is extremely convenient to use and maintain.It is divided into: air filter, liquid filter, network filter, light filter according to filter media.1.Efficient,Accurate filtration: filter plate filtration technology with special structure,Accurate and sensitive performance,Ensure that only particles with smaller particle sizes than required can enter the system,Is the
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