The main functions of aquarium filters include the following aspects:
Removing waste and harmful substances: The filter removes solid substances such as leftover bait, feces, and aquatic organism corpses in the water through physical filtration and biological filtration, and removes heavy metal ions and toxic substances dissolved in the water, such as ammonia, nitrogen, and nitrite, so as to keep the water clean and prevent water pollution.
Cultivating beneficial bacteria: The filter material (such as filter cotton) in the filter can cultivate beneficial bacteria, which can decompose harmful substances in the water, such as ammonia salts, nitrites, etc., to maintain the health of the water.
Supplementing oxygen: The filter circulates the water flow to make the water flow or circulate, replenishing the oxygen content in the water, which is very important for the breathing and growth of fish.
Maintaining water balance: The filter maintains the ecological balance in the water through its biological filtration function, prevents the growth of harmful bacteria, and ensures the healthy growth of fish.
Features of different types of filters:
Top filter: small size, less filter material, limited filtering effect, but easy to install.
Bottom filter: directly extract impurities from the bottom sand, form water flow, delay the bottom sand from turning black and smelly, suitable for large aquariums.
Built-in filter: installed inside the fish tank, suitable for small aquariums, but the filtering effect is limited.
External filter: installed outside the fish tank, large capacity, good filtering effect, suitable for large aquariums.
