When goldfish bowls are used, the water level should be maintained at half of the bowl. This facilitates more surface area which allows more oxygen that helps in oxygenation. In general it is advised not to use goldfish bowls for maintaining healthy fish. The goldfish are healthier, happier and the display is excellent in a goldfish aquarium.
The number of fish that have to be kept determines the size of the goldfish aquarium. When breeding, each fish requires about 15 gallons of water but in general about 10 to 20 gallons of water per fish should be adequate. How to breed goldfish in an aquarium is an art that can be learned with patience. The stand that supports the tank should be selected with respect to the size of the goldfish aquarium. The weight of the fish, equipment, decorations, tank, sand and gravel all has to be added to know the entire weight. Each gallon (4.5 liters) of water will weigh 10 lb (4.5 kg), the factor that contributes the major weight should be considered. Cushioning material such as Polyurethane, rubber or equivalent impact absorbing substance can be used between tank and the stand. The cushioning materials avoid pressure points and do not allow cracks to develop on the goldfish aquarium.
According to the total quantity of water in the goldfish aquarium, the correct aeration and filtration can be selected. It is important that the water in the aquarium is always maintained absolutely clean. To make sure that it is without any contaminants the gravel, sand, decoration and equipment such that immersed in the Goldfish aquarium have to be cleaned thoroughly. During breeding natural plants help the fish very much, even otherwise natural plants help a healthy environment.
Algae are formed in the absence of sunlight. It is advisable to avoid direct sunlight and cold draft when choosing the location of the Goldfish aquarium. The artificial light should be adequate for the goldfish. Goldfish aquarium is recommended to be placed in such locations avoiding direct sunlight and draft of cold air. The useful algae formation is prevented by the direct sunlight. The water in the tank can become very cold which may be harmful or may kill fish in the tank. Adequate artificial lighting has to be provided for a healthy environment.