1. Main functions of the filter
1) culture beneficial bacteria
By filtering out harmful bacteria, it can provide a suitable living environment for beneficial bacteria and make them reproduce faster.
2) filtering impurities
Remove impurities and harmful bacteria from the water, and provide breeding ground for beneficial bacteria, namely digestive bacteria, so as to make the water in the fish tank clear and transparent.
3) Improve the oxygen content of water.
The filter can increase the contact area between water and air to a certain extent, and can play a certain role in increasing oxygen.
2. Introduction of filter types
1) external filter
Wall-mounted filter, also known as waterfall filter, is a semi-closed filter hanging on the cylinder wall. There is an area for placing filter materials inside. The water in the fish tank is sucked into the filter by its own water pump, and then the water flows through various filter materials and enters the tank.
Advantages:
1. It's very easy to use. Just plug it in when you buy it, which saves the trouble of installation.
2. It does not occupy space, because it is hung outside the fish tank, so it will not occupy the space in the tank.
3. The price is cheap
4. The noise is relatively low, and the closer the water outlet is to the water surface, the less noise it is.
Disadvantages:
1. Because of its small size, it can accommodate less filtering materials and the filtering effect is not good.
2. Because of the problem of filtration effect, it is only suitable for filtration in a small water tank, such as a small fish tank of 30cm-50cm.
Recommended index: four stars
2) Upper filter
Upfiltration is our common goldfish filtration system. The upper part of the filter is placed on the fish tank, and the filter tank is outside the fish tank. The dirty water in the fish tank can be pumped out by submersible pump, and then flows into the filter tank through the outlet pipe for filtration, and then flows into the fish tank through the inlet pipe, thus forming a circulation system.
Advantages:
1) Easy to clean. When the filter material is polluted, it can be easily taken out for cleaning.
Disadvantages:
1) has a large volume and occupies a large space.
2) The uphill trace filter is not suitable for aquariums with aquatic plants. The water flow of the upper filter will reduce the residence time of carbon dioxide in the aquarium, and at the same time, the water flow of the filter will bring a lot of oxygen in the air into the water, and the oxygen content in the water will increase, which will make the algae that like oxygen grow in large numbers and affect the ornamental effect of the aquarium.
3) The price is relatively high.
Recommended index: three stars
3) Water goblins
Water essence, also known as sponge filter, also known as pneumatic filter cotton, usually refers to small finished gas lift filter. The principle is to use the water lifting effect produced by bubbles rising in the water, which is driven by an air pump, with low power and low efficiency, and is a small thing commonly used in aquaculture boxes; It is also built-in.
Advantages: 1 The advantages are that the water flow is controlled by the airflow, and the water flow is small and slow, which will not have a great impact on small fish.
2. The sponge has fine pores and good filtering effect.
Disadvantages:
1. It is necessary to clean rocks and wash ridges frequently, which is easy to block.
The price is very cheap. Advantages:
1. The advantage is that the water flow is controlled by the airflow, which is small and slow, and will not have a big impact on small fish.
2. The sponge has fine pores and good filtering effect.
Disadvantages:
1. It needs to be cleaned frequently and is easy to be blocked.
2. The price is very cheap, and it integrates oxygenation, filtration and cultivation, which is very suitable for small tanks and cultivation.
Recommended index: five stars
Generally speaking, I personally recommend using water goblin as the primary filter, which is cheap and easy to use, and can be used in the future, such as breeding small fish and aquatic plants.
Next, I recommend some oxygenators that I often use at home.
Water Fairy Filter with Heart Price: 12-37 yuan.
Shop: Shunfeng Aquarium
This water goblin is very easy to use, and it is also the first water goblin used by my novice. This model is especially suitable for raising small fish, blue clothes, goldfish and fighting fish. No problem, you can put nitrifying bacteria in it, which is especially helpful for the cultivation of nitrifying bacteria. It can make fish grow fast and well, and it is not easy to get sick.
2. Sensen fish tank filter wall-mounted filter bucket? Price: 85 yuan
Shop: thousands of pet shops?
This is also my favorite brand of filter, one is silent, there will be no rumble. The other is that this usable area is larger than that of water goblins. A normal small tank may need two water goblins, but this is enough.
The difference between this model and the rough water seepage goblin is that this model is an integrated design, which does not take up too much space. You can make a landscape for the fish tank at will, and it does not occupy the position in the fish tank. Putting the water goblin directly in the jar will affect the appearance. This one is easier to wash and disassemble.
That's all I want to share with you. I hope you can enjoy raising fish!