Aquarium
Contributing to the solution of complex and versatile tasks, the aquarium must meet certain requirements, be convenient for its inhabitants, observation and systematic maintenance, have the most acceptable design solution…

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Aquarium tips: essential information
The most common cause of fish diseases is stress. The cause of stress can be the wrong environment and food or the wrong choice of fish species-some species can not…

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Live-bearing aquarium fish
Most viviparous fishes belong to the family Poeciliidae Cyprinodontiformes squad. They produce their offspring not in the form of eggs, but in the form of already formed fry, which have…

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Glass or acrylic?

As a rule, aquariums are made of silicate glass or organic (acrylic). However, many people don’t know what the difference is between the two – except that an acrylic aquarium is usually much more expensive. Because of this, it may seem that the acrylic aquarium is better, but this is not always the case. Both materials-acrylic and glass-have their advantages and disadvantages.
SCRATCH RESISTANCE
Glass
Glass is very difficult to scratch. This can be done only with a solid material and with the application of certain efforts, for example, a piece of unpolished aquarium gravel, stone or metal, deliberately leading them on the surface.

Acryl
Acrylic, on the contrary, is easily scratched. Even the materials used to pack acrylic aquariums can damage it, despite the best efforts of manufacturers and shippers. Such an aquarium can be scratched when loading or unloading, cleaning, and even in the store about a bag or backpack if someone passes by. Scratch acrylic aquarium can even its inhabitants, if they have sharp claws, teeth, or shells. Because of this feature of acrylic when cleaning the walls from algae and plaque, it is necessary to use only special scrapers, and also carefully monitor so that they do not accidentally grab pieces of gravel from the aquarium. Fortunately, scratched acrylic can be restored. Special polishing kits can be found in stores, and they can be used to remove scratches on the walls of the aquarium, but only from the outside. After using such polishes on the inside of the walls of the aquarium may remain their toxic residues, which is why the aquarium will be unsuitable for living animals and plants.
WEIGHT
Glass
Glass is a denser material and therefore it is heavier than acrylic. A glass aquarium often weighs 4-10 times more than an acrylic one of the same volume.

Acryl
Acrylic aquariums are lighter than glass ones. This means that if you need to move it for any reason, it will be much easier to do so than in the case of its glass counterpart. In addition, the structure on which such an aquarium stands will be subject to less load. However, it should be remembered that most of the weight of the filled aquarium is the weight of water and scenery, not the aquarium itself.
FRAGILITY
Glass
A sharp blow will lead to the emergence of cracks (in extreme case-destruction) just aquarium or one of his walls. The result will be a mess, the fish will lose their “home”, and perhaps there will be significant damage to the space occupied by the aquarium. However, such situations do not happen every day. For damage glass aquarium, as already mentioned higher, are required significant efforts, so almost always smashing aquarium is the result sloppy with him treatment.

Acryl
Despite the fact that from a very sharp impact, acrylic, like glass, can also crack or break, the amount of force required for this is much greater. On the other hand, almost any impact that does not harm the glass will leave scratches or other marks on the acrylic surface.
FORM
Glass
Glass is a relatively hard and brittle material. From-for this from glass several harder to do aquariums not rectangular forms. In addition, when the glass is curved, it refracts the light falling on it, so the objects on the other side seem larger or smaller than they really are.

Acryl
From acrylic, you can make an aquarium of almost any shape that you can imagine. Curved acrylic glass also has less tendency to distort objects. Due to these two features, the variety of forms of acrylic aquariums is very large.
RIGIDITY
Glass
Glass is able to withstand quite large loads. However, the surface on which the aquarium stands should be flat and the supporting structure should be strong enough to support the weight of the water-filled aquarium.
Due to the rigidity, glass aquariums require less structural support at the top, necessary to prevent the glass from bending under the influence of water pressure. In this case, a slight deflection is a normal phenomenon, but excessive can lead to depressurization of seams or glass bursting.

Acryl
For an acrylic aquarium, a structure is needed that will support the entire lower part of it, otherwise the integrity of the seam may be violated under the weight of water. The exception to this rule are aquariums, the thickness of the bottom of which is much larger than it is necessary for a given volume. Due to the high plasticity of the material, acrylic aquariums require mandatory installation of ties and stiffeners to prevent the glass from bending to the outside, divergence of seams, and, as a consequence, water spillage.
STRENGTH AND THICKNESS OF GLASS
Glass
The thickness of the walls of a glass aquarium will be greater than that of a similar acrylic one. Even though a tempered glass aquarium is no bigger than a regular glass aquarium of the same size, compared to acrylic, tempered glass will still be thicker. In addition, it is not possible to drill a hole in the tempered glass to accommodate any filtration system designed to overflow water.

Acryl
Unlike silicate, acrylic glass can withstand the same volume of water at a lower thickness. In addition, in any acrylic aquarium, you can make a hole to accommodate the overflow system.
REFRACTION OF LIGHT
Glass
Glass and water have different refractive indices of light. This means that light passes through air, glass, water, is reflected from the fish and, overcoming the return path-through water, glass, and then air, is refracted four times. Every time this happens, the image is distorted. In this case, the colors are not perceived quite correctly, the location of fish and objects is transmitted inaccurately, and their size can be slightly distorted. The thicker the glass, the greater the distortion. Be that as it may, most home and office aquariums are not so huge that it delivers any significant inconvenience.

Acryl
Acrylic has almost the same refractive index as water. This means that when you view fish in an acrylic aquarium, the light is refracted only once or twice. Because of this, the only distortion that you are likely to see is a slightly incorrect location of the fish, but their size and color will be what they really are.
TRANSPARENCY
Glass
Glass retains its transparency over time. In the new aquarium, it will be the same as in the old, former in use. The only difference is that if you have to replace any of the glasses in the aquarium with a new one, you will notice that there are fewer scratches on the new glass.

Acryl
Many types of acrylic glasses turn yellow over time, especially if they are exposed to direct sunlight. This is a normal chemical reaction in the materials from which they are made. Of course, technological progress does not stand still, but so far it is not possible to completely avoid this problem. In addition, since acrylic is quite easy to damage, it is likely that you will look at your fish through a mesh of scratches, the number of which will only increase over time.
COST
Glass
Glass is easier to transport and requires fewer specialized tools to operate, so glass aquariums tend to be cheaper than acrylic ones.

Acryl
Acrylic aquariums are usually more expensive than glass ones. In most cases, their high cost is associated with the complexity of transportation. To bring to the buyer such an aquarium, without scratching in the process of transportation and unloading, is quite problematic. In this regard, in terms of cost, it is sometimes cheaper to buy a glass aquarium.
So which aquarium is better to choose, glass or acrylic? If you are planning to purchase a very large aquarium – 1500 liters or more-or if you need a non-rectangular aquarium, you will probably want to consider acrylic. However, at present the market also offers good glass aquariums with curved walls, which are very attractive, and have all the advantages of glass.

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