Choosing a fish tank is an important thing. The rupture of fish tank, the change of tank specifications and the poor quality of glass are all common problems when choosing fish tank. Therefore, selection is also a skill to remind you to choose a better brand fish tank when buying, and pay special attention to the following points:
1: Robustness: Commonly used aquarium materials are glass, acrylic and so on. In order to withstand the huge water pressure, it is necessary to make a safe aquarium by choosing the appropriate thickness. Generally, the wall thickness of an aquarium over one meter should reach 1CM, and so on. Of course, it is better to choose finished acrylic cans.
2. Shape: Common aquarium shapes are rectangle, square, circle, polygon, etc. , can be selected according to personal preferences, uses and home environment.
3. Length: The length of the aquarium can be selected according to the purpose of decoration, and it is generally matched with the size of the lamp to achieve the best effect and economic benefits.
4. Width: Generally, the width of the cylinder of 70 ~ 120cm should be above 40, preferably 60CM, so that four groups of lights can be put down, and the depth is convenient for beautification.
5. Height: The water level is generally 50 cm ~ 60 cm, mainly for the penetration of light waves! More than 60CM will affect the penetration of fluorescent lamps, and metal halogen lamps should be below 67CM. Besides, too high a cylinder is not convenient for future maintenance (it needs to be extended downwards). Of course, less than 50CM will affect the overall beauty (more than 2 meters is another matter, but pay attention to the choice of prospects)
6. Support degree of cylinder frame: the water quantity of aquarium is (length * width * height/1000). One liter of water is equal to one kilogram, so the bracket must be able to bear the weight of 1.2 to 1.5 times the water volume to ensure safety (sand and stones should also be considered in the future).
7. Bottom sand: Generally, it is coarse river sand in the market, and fine river sand (mainly grass, such as drying grass), black sand and white sand (easy to get dirty), such as silica sand, silica sand and base fertilizer sand can also be used. Note that only Shui Rong can survive in alkaline water, so coral sand or other alkaline sand or stones generally cannot be used.
8. Filtering system: The bigger the better, the more the better, regardless of price and space. Because this is one of the most important links, it is necessary to choose a set of filtering equipment suitable for your aquarium in a limited space. Because the concept of most domestic players has not changed, we will not introduce top equipment for the time being! In this range, I recommend the combination of external filter pump and built-in water pump motor. Note that the outer mold is better to be one size larger than the manufacturer's recommendation, and it is recommended to use two for the size above1.8m.!
9. Carbon dioxide: This is a very important link, which beginners can easily ignore. We know in junior high school biology class that plants absorb CO2 (under photosynthesis) during the day and release O2, but at night it is the opposite. Generally, the CO2 concentration should be 10 ~ 20 PPM to meet the needs of aquatic plants. Of course, don't overdo it (it will make the fish lack oxygen and lower the PH value). I would like to remind you that the so-called CO2 tablets and powder generators of urban animals have no practical effect and may have negative effects. Only CO2 cylinders or electrified carbon chip generators can have practical effects, which is the most direct!
10: Constant temperature system: There is nothing to say, but it should be noted that one liter of water needs one watt of power. In terms of species, tuber grasses such as negative aquatic plants, netted grasses and white gold weeds need to be below 26 degrees (preferably 18 ~ 22), while red aquatic plants like to grow well at high temperature of 26 ~ 30 degrees.