The minimum size of a cylindrical fish tank depends on a number of factors, including the species, quantity, and size of the fish, water quality management, and the behavioral needs of the fish. While the needs of each species of fish are different, in general, to ensure the comfort and health of your fish, here are some guidelines for the minimum size:
1.Small fingerlings: For small species, such as some goldfish or angelfish, the minimum size is recommended to be 20 liters (about 5 gallons) of water capacity. This size provides the right amount of space for swimming and water bodies, while also being easier to maintain. However, it is important to note that contaminants such as cyanobacteria or other organic substrates in the water may affect the quality of life of the fish, so it is still important to use filters appropriately and have regular water quality testing.
2.Medium-sized fish species: For medium-sized fish species, such as crucian carp or tropical fish, it is reasonable to build a cylindrical fish tank with a minimum capacity of about 40 liters (about 10 gallons). Such a size is able to provide more space for swimming and allows the addition of an appropriate amount of decoration and base plants. Similarly, the use of proper filters and regular maintenance are essential to maintain the quality of water quality.
3.Large species: If you plan to keep large species, such as spiny tails or tiger fish, then you will need a larger capacity cylindrical fish tank. The minimum recommended size is 75 liters (about 20 gallons) or more. Such a size provides ample swimming space and helps reduce the stress that arbitrary behavior can cause to the fish. In addition, large fish typically produce more waste and organic matter, so more powerful filtration systems are needed to keep the water clean.
Regardless of the type of fish raised, proper water quality management and good husbandry practices are required, such as regular water quality testing, filter maintenance, and regular water replacement. These measures can help maintain the ecological balance of the fish tank and provide a suitable environment for the healthy growth of fish.
Finally, we must emphasize that these minimum sizes are just some guidelines to try to meet the basic needs of the fish. When customizing a cylindrical fish tank, it's best to consult a fish farming expert or seek advice from a fish farming enthusiast. They can provide you with more accurate advice and guidance based on the specific needs of the fish you care about and your budget.