Aquarium bottom sand helps to balance the water ecology. However, for the choice of bottom sand, is it better to choose finer or coarser sand, and whether to use silica sand or black soil? Some people think that it is better to choose slightly finer sand, but too fine sand is not easy to clean and easy to block. About the common knowledge of the bottom sand, follow the editor to learn about it.

1. Factors to consider in choosing the bottom sand

1. Consider the type of fish to be raised

Catfish are cute, They perform a very useful function in the aquarium, they feed on whatever is inside or outside the bottom layer, which, if not removed, may decay and be detrimental to the aquarium.

2. Too rough is bad for reproduction

Coarse, sharp-edged sandstones do not exist in their natural breeding grounds, and on too rough sandstone layers, they may damage Their own taste-sensitive touches will eventually lead to them being unable to eat and dying.

3. Consider future cleaning and maintenance

The sand at the bottom of the aquarium should not be too thick, and it is better to choose slightly finer sand. But not too fine, too fine sand will easily cause clogging at the bottom of the aquarium row. Judging from experience, the bottom sand should be at least 1 cm in diameter, so as not to cause blockage.

4. The diameter should not be greater than 4cm

The finer the gravel on the bottom of the aquarium, the better. Bottom sand that is too coarse (ie sand diameter greater than 4cm) is not acceptable. Since the debris tends to settle between different substances, it is then broken down by bacteria. If the bottom layer is fine-quality sand, the debris will sink, and it can be easily sucked up when Zhao Jian presses the mining method.

5. The diameter should not be less than 1cm

The bottom layer should also not be too fine, as this may cause the water circulation it needs to completely collapse. After a long time, when the debris is small enough, the water circulation of the bottom layer is actually blocked, and a fine cement layer is formed. For this reason, as long as the diameter of sand or gravel is less than 1cm, it should not be considered.

2. Is it better to use silica sand for the bottom sand? Or is it better to use black soil?

1. The advantages of choosing black soil

The black soil itself is formed by high temperature and high pressure, and contains Nutrient sources such as fertilizer and mineral elements have a buffering effect on externally added liquid fertilizers and root fertilizers, and have the advantages of reducing acid without cleaning. The establishment of an aquarium saves most of the steps and is widely favored by players.

2. Pay attention to choosing black soil

Black soil has a certain effect, as long as you avoid black soil and counterfeit soil from unknown sources; There won't be much of a problem, usually I would recommend that you first determine what the black soil is used for, and then define the price range.

3. Choose coarse soil or fine soil

For landscaping, it is recommended to use coarse soil mainly, fine soil can be used in the foreground part, the purpose is to plant turf more easily, But if you don't have the budget to buy 2 packs of soil, it is recommended to buy coarse soil.

4. Black soil also has disadvantages

Black soil releases water and fertilizer the fastest and strongest for the first time. At this time, it is necessary to control light and strengthen water changes to avoid algae rampant; the cost of black soil is high , It is recommended to use the water after planning the landscaping or configuration, and try to avoid secondary use after turning the tank, so as not to destroy the interest in setting up the tank.

3. The concept of the fish tank bottom sand filtration method

1. First, prepare the water tank with the fish tank. The surface can be cut with a small saw to allow only water to enter).

2. Install the bottom sand separator or bottom throat in the fish tank first, then connect a straight throat, and the top of the straight throat is connected to a submersible pump (Powerhead).

3. Then, coral sand can be added as a biological filter bed, and the thickness of the sand bed is about 7cm to 8cm. The coral sand not larger than 3mm can be used completely, or the coarse-grained coral sand can be used as the lower half layer and the coral sand not larger than 3mm can be used as the upper half layer, and a sand separation net can be added in the middle as a separation.

4. After adding water, nitrifying bacteria should be cultivated in the sand bed. After the nitrifying bacteria are successfully cultivated, the sand bed will be a biological filter bed.

Fourth, fish tank bottom sand water flow filtration method

1. Downward flow method

In the downward flow method, the water in the fish tank is forcibly pumped In the sand bed, the water is pumped back into the fish tank by the submersible pump through the sand separator or bottom throat under the sand bed. Since the sand bed has cultivated useful nitrifying bacteria, harmful substances in the water are decomposed.

2. Counter-current filtration method

In the counter-current method, it is recommended to add a cylindrical filter. First, the water in the fish tank is forcedly pumped into the fish tank by the cylindrical filter as pre-filtration, and then the water is pumped back to the sand separator or bottom throat under the sand bed through the cylindrical filter, and then the water is returned to the fish tank through the sand bed. The useful nitrifying bacteria have been cultivated in the sand bed, and the harmful substances in the water will be decomposed.