Aquarium sizes for goldfish are numerous because people have different needs. Ultimately, it depends on how many fish you want to maintain. The rule of thumb is 3 gallons of water for every 2.5 cm (1 inch) of the fish’s length.
To put it another way, you will need a minimum 36 gallon fish tank for four goldfish 3 inches long. This is the minimum size needed to keep them comfortable. New goldfish owners must also realize that a goldfish can reach lengths of up to 10 inches when they mature.
One of the most common mistakes made is buying a tank just big enough for young goldfish. But when they start to grow, the tank becomes congested. For this reason, aquarium sizes for goldfish should account for their maximum potential size.
Other Benefits of a Large Aquarium
A large fish tank will allow goldfish to stay healthy and grow fest. Ammonia will be diluted and not cause any problems. A sizable tank also lowers the chances of flipover condition, swim bladder, dropsy and other fish diseases from occurring.
A small fish tank can lead to stunted growth. A small aquarium means they will have little room to swim in. A large one will be easier to clean and maintain. A polluted tank can make goldfish sick or kill them.
Caring for a Goldfish Aquarium
Do not place the aquarium in places where the temperature fluctuates. You should also avoid putting them near a music player or a place that produces a lot of noise. These can stress the fish out. Many aquariums have colorful lights. You need to turn these off during the evenings however; goldfish like to sleep in the dark.
Goldfish and their fish tanks will require consistent upkeep. They should be fed twice a week.
One of the problems with goldfish is they eat in a messy manner. Your tank must have sufficient room for filtering. With a large enough tank, the oxygen to water ratio will become adequate. An appropriately sized surface will permit gas exchange between the water and air. The water must also be replaced on a consistent basis. As a rule, this should be done two to four times a month.
The subject of aquarium sizes for goldfish can be a complicated one, so research is paramount. This will be the home of your pet, so make it as comfortable as possible.