Do you still need a filter for an oxygen pump? If the fish tank is small,It is recommended to use water.However, the gas stone of the oxygen pump cannot cultivate the chemical bacteria.In addition, it is not necessary to cultivate this thing,Be careful not to change too much new water at once.If you have already set up a system in your fish tank.So do not need to care too much about the cultivation of nitrobacteria.The function of the oxygen pump is only to increase oxygen!You need a Water Goblin according to your situation!Less feeding, no problem changing water frequently!It seems that you just played aquarium,Raise water first,In fact, the larger the fish tank is easier to fish,On the contrary, the smaller the fish tank, the harder it is to maintain,The reason is that relative to fish, water is the foundation of its survival,The smaller the water body,The easier it is to change,For example, the bait that has not been eaten,The excretion of fish,No filter,It's no use changing water frequently,The faster you

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What do goldfish filter materials need? There are a variety of filter cotton,It is generally a cotton fabric with strong hydrophilic properties,There are many colors such as green and white,Is the basic material of physical filtering.Looks more like the sea,Large pores,Mostly black, green and yellow,The culture bed of nitrate bacteria,The role of the carrier,Basic material for biochemical filtration.A wide range of sources,After disinfection and washing,The effect of making sand filter is very good,It can effectively remove impurities and even bacteria in the water!Generally used once,Should not be reused!The spherical and square shape of plastic is used to cultivate the carrier carrying nitrobacteria,Some have biochemical cotton inside,Mainly increase the contact area!A small amount of use is not effective.Is a cylindrical or hexagonal cylinder made of ceramic or glass,Strong penetration,Many pores,It is very conducive to the cultivation of carrying nitrobacteria.Good effect.It is a m