Tropical Fish For Sale - Materials Commercial
Materials Commercial aquariums are almost always made of glued glass, with silicone joints. These materials are suitable for water volumes of around 500 liters - volumes rarely exceeded in the aquarium trade. The generalized nature of the materials and the relative simplicity of the gluing mean that any careful hobbyist can build a glued glass aquarium him or herself. For bigger volumes, polyester resin or cement are used, with only the front part of the tank made of glass. These are the materials found in public aquariums. Plexiglas, which is light but also scratches easily, is used for the rarer round forms. Small plastic tanks are also available for use as rearing or quarantine tanks. Dimensions The most harmonious form is obtained when the length is equal to the height multiplied by 1.5-2.5. The height will be slightly greater than the width, except in built-in tanks, where the contrary is the case. These proportions can be adhered to up to a length of 1.5 m, but they are impossible after that, as the height must never exceed 0.5 m (see table). It is not advisable to use very narrow aquariums, as a trick of the eye means that a tank seems one-third narrower when it is filled with water, producing an unfortunate visual effect. Narrow tanks can be attractive, however, if they are put on narrow pieces of furniture, such as a mantelpiece or a dividing wall between two rooms. It is also types of tropical fishes important to take into account the weight of the tank. A solid support is required, because an aquarium is heavy when it is put into operation: the weight of the water and decor must be added to that of the tank itself.
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