Choosing an aquarium
A beginner can choose from a wide array of aquariums, they come in all shapes and sizes. Choosing a big aquarium or a smaller one depends on the space available and the time and effort that can be provided for its maintenance. However, a medium sized aquarium, something in the range of atleast 10 gallons/40L is usually preferred over smaller variations as they provide enough space for the fish and also require less frequent water changes. Bigger aquariums have larger volume of water to dilute the fish waste and thus can be kept for a longer period of time without changing the water. Smaller aquariums also undergo more rapid changes in temperature and water chemistry which is harmful to the fish. Larger volume of water ensures that temperature rise or fall is not abrupt and this helps the fish to thrive better. A 30 gallon/120L is deemed ideal for beginners as has all the advantages of a bigger aquarium and choosing one even bigger than this does not add much to the advantages. It is easier to maintain and also provides protection against rapid changes in the water values.
Hygiene and ease of cleaning is another issue to be kept in mind while choosing an aquarium. They may come in various shapes ranging from rectangular to hexagonal but only those aquariums should be chosen in which every nook and corner can be cleaned. Unclean corners having stored waste products can result in formation of foul smelling injurious gases which are very harmful for the fish. Even those aquariums which are too deep can pose a problem while cleaning and some waste material may be always left behind even after thorough cleaning. So, only beauty or visual appeal is not of prime importance while choosing an aquarium, the shape of it should be such that it is convenient to keep it clean and provide a healthy environment for the fish.
Light penetration of the aquarium should be verified before buying it. Beneficial plants within the aquarium will not grow without proper light. Without these plants the water will not have enough oxygen for the fish to survive. Internal lighting might have to be used when the walls of the aquarium do not provide enough light penetration.
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