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Help: how to lay the filter tank above the fish tank? Placement order: the top is ordinary filter cotton,Water passes through it first,Filter out large impurities.The second layer is biochemical cotton,Porcelain ring (the more the better ).Fish farming started,That is, when the water is ready to release the fish,Don't put too much fish,The * chemical bacteria * of the fish tank did not form,The water quality is unstable.Too much fish at a time,It is easy to change the fish tank into a 'milk tank ',It is best to introduce some * strains,Fish market is generally available,It's best to buy solid,Cheap liquid,More fake,And then all you have to do is keep filtering.Remember: filtering can't stop,Bacteria like high oxygen,A dark environment.Once you stop filtering,The bacteria will slowly drop due to lack of oxygen,The water quality will start to cloud again.The water is clear slowly,The water quality is stable,You can add a few more fish.Pay attention to the stocking density of the fish tank,There
How to purify tap water? The process of purifying water in the water plant is: River water → adding flocculation (alum) → precipitation → filtration → adsorption (activated carbon) → disinfection → water supply companies use physical and chemical double-layer functions to disinfect tap water under normal circumstances,It is best not to drink the disinfected tap water directly.Fish and the like can be exposed to the sun for 3 days,The volatile substances such as hydrogen chloride will evaporate.For drinking,It's better to boil for more than 5 minutes,When I put 10 points in the air, I once saw a teacher's water purification device: make a water filter,Can be made into a rectangle,A little bigger,Leave a mouth at the bottom,Put a few layers of filter,On the water tank,Filled with a clean mixture of coarse river sand and charcoal, install a purifier in the faucet,And,It's because your kettle has scale,
