How to install a three-in-one fish tank filter? First, the filter box is placed on the fish tank,Above the water,Filter cotton in the box,The outlet under the filter box is equipped with a filter tube,Ensure that the water flows into the fish tank.Then put the submersible pump below the surface of the fish tank,Outlet connection filter tube,The outlet is connected with a transparent hose,The other end of the hose is above the water.Physical filtration: it uses mechanical methods to separate large particles from the water.For example, the remaining feed particles, the bones of the dead fish, the excrement, secretions, vomit, Body mucus, etc,Generally, sponge, plastic spray cotton, nylon mesh for fine mesh, palm leaf fiber, etc.Biological filtration: cultivating beneficial bacteria,Breaking down harmful elements through bacteria,For example, ammonia salt, nitrite, nitrate, phosphate and so on.The commonly used filter materials are: biochemical ball, ceramic ring, glass ring, coral sand.Chemical fi
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Xiao Ming poured the turbid lake water sample into the beaker. after standing for a while, it was filtered by the device shown in the figure. Excuse me: (1) there is a mistake in the figure? (1) there is no glass rod drainage in the picture,If the glass rod is not used for drainage,Will cause the liquid to splash out when filtering,Even damage the filter paper;(2) if the filter paper is not close to the inner wall of the funnel,Will lead to slow filtering;(3) damaged filter paper,Then the mixture will directly enter the filter without filtration;The liquid level to be filtered is higher than the edge of the filter paper,The liquid mixture also flows down from the outside of the filter;The beaker of the filter is not clean,The leachate will also be turbid;(4) hard water and soft water can be identified with soapy water,The foam is a lot of soft water,(1) no glass rod drainage;(2) the filter paper is not close to the inner wall of the funnel;(3) damaged filter paper;The liquid surface is higher than the
