What are the external filter tanks in the aquarium? What order? The first layer from the bottom: Put a piece of physical cotton first,The second layer: put red fungus house or breathing ring,The third layer: put biochemical balls and activated carbon,The fourth layer: Put a piece of physical cotton,The fifth floor: digest a piece of cotton,Top floor: put another piece of physical cotton,The above description is the filter sequence of the self-made filter barrel,The finished barrel does not need to be matched by itself,
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Smith's price machine for water purifier (double water) Water purifier is also called water purifier, filter, used as sewage treatment. Generally speaking, the water purifier refers to a small filter used as a household. The water purifier can be divided into many kinds according to different purification principles and processes. Among them, RO reverse osmosis technology has the highest filtration accuracy (filtration accuracy is 0.0001 microns), since the pore diameter of the reverse osmosis membrane is only one in 100,000 of the diameter of the hair wire, only water molecules and dissolved oxygen are allowed to pass through, all the impurities contained in the water, such as pesticides, bacteria, viruses, heavy metals and other harmful substances, have been trapped and eliminated. In addition to reverse osmosis technology, there are many other filtration technologies: filtration (filtration accuracy is between 0.001-0.0001 microns) UF membrane (filtration accuracy is between 0.1-0.01 microns) fine filter (
