Aquarium design
Fish tanks are available in a wide variety of sizes, shapes and materials. Before you purchase your first aquarium it is important to consider how different designs will affect your fish.
Aquarium size
In terms of the overall water capacity a larger tank will often be better. A bigger tank is normally recommended to beginners as it is much easier to maintain good water quality. The larger water volume enables more stability in the aquarium due to the dilution effect. In smaller aquariums waste products will be more concentrated and have a greater negative effect on water parameters.
When choosing an aquarium you should find out the number of fishes it can support before making your purchase. Overstocking a tank will cause problems for your fish and may result in death so if in doubt buy a bigger tank or keep less fishes. One common way that is often used to determine how many fish can be housed in an aquarium is the ‘one inch per gallon’ of water rule. This is calculated as the length of the fully grown adult fishes compared to the volume of water after displacement. Although this is ok to use as a general guide, it does not take into account many other factors such as gaseous exchange and filtration.
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