A fairly common situation is when the decision to purchase an aquarium arises due to the fact that you especially liked this or that fish. Or, water world becomes the decoration of a certain room. Based on its size and the characteristics of the situation, the dimensions of the container are also selected. In both cases, an aquarium calculation is required. In the first option, you need to understand what displacement will be needed for a certain number aquarium fish a specific species, and in the second case, an understanding is required of what kind of living creatures and in what quantity, respectively, can be populated with the selected “fish house”. But, in any case, you will have to count.

How to calculate volume

The approach to the question of how to design an aquarium directly depends on its geometric shape. As you know, most often containers for artificial reservoirs are made rectangular or square. In both cases, you just need to multiply the length of all their sides. But when you reach the height of the aquarium, remember that you should not take its entire geometric length, but only to the level to which water will be poured. To get the displacement from cubic centimeters, divide the resulting value by 1000.

With a round aquarium it is more difficult. Here, no matter how strange it may sound, it is easier to measure the volume by simply pouring water. There are, of course, formulas, but going into such complex geometric calculations is long and tedious. The same applies to containers in which one of the walls has a slight convexity. You can't apply calculations here like you would for a square or rectangle.

If you need an exact value regarding the displacement of a container, you need to take into account its filling. After all, when there are 3-4 pots with plants at the bottom, several large stones or some other decor, then all this automatically reduces the volume of water in the aquarium. The easiest way is to place everything in a vessel of known volume and gradually fill it with water, adding a liter or half a liter. As soon as the container is filled, the difference between its volume when empty and when filled will be equal to the volume of water that these aquarium objects displace.

How to calculate the volume of an aquarium for fish

Reading the description aquarium fish, you probably come across information related to their need for

free space. And here everything is simple - you just need to multiply the number of fish of one species by the requirements for free volume to get the minimum volume of the aquarium. It is also worth considering that sometimes a pair of fish may need more space for breeding than for simply living within one artificial reservoir.

When buying an aquarium, it is logical and easiest to simply ask about its volume. In pet stores they are sold along with books containing brief description and product characteristics. Sometimes this information is printed on a sticker on one of the walls of the aquarium. It is logical to base your choice of fish on the volume of the aquarium indicated in the description.

What does 20% aquarium water mean?

Let's look at examples.
If you have a 45 liter aquarium, 20% of 45 liters = 0.2 x 45 = 9 liters. Take a regular measuring cup, say 0.5 L, and add 18 cups of water, which will be 20%. Now mark the water level in your aquarium with a marker or other method. In the future, you can navigate by this mark.

Another example. You don't know how many liters are in your aquarium. Take a ruler or measuring tape, measure the height of the vertical side of the aquarium (from the bottom to the water level) and multiply it by 20%. For example, most small aquariums are approximately 30 cm high, the water level reaches up to 24 cm. In this case, 20% of 24 cm = 0.2x24 = 4.8 cm. Measure 4.8 cm from the water level and mark this place with a marker on aquarium surface.

Remember that replacing 20% ​​of water with tap water is usually safe even without special conditioners, and replacing more water can be harmful to the inhabitants of the aquarium, even when using special preparations. In this case, it is better to replace 20% of the water twice a week.

How many liters are in my aquarium?

Many medicines and preparations contain recommendations to add a certain amount of product to a certain amount of water. Therefore, it is very important to know the exact volume of the aquarium. If you don't know it, use our tips and calculate it yourself.

Measure the aquarium from the left to the right edge. For example, let its length be 45 cm.

Measure the aquarium from the bottom to the top (height). For example, let's take a height of 30 cm.

Now measure the width of the aquarium (from front to back). For example, width 30 cm.

Then multiply these three sizes. In our example, we get 45x30x30 = 40500 cubic cm. Now this number should be multiplied by 0.001 to get liters. In our example we get 40500x0.001=40.5 liters.

Minor correction

Almost every aquarium contains large stones, a layer of gravel and other objects that reduce the amount of water in the aquarium. Of course, you can collect all these objects, place them in a basin of known volume and try to calculate the volume of all these objects by manipulating the water. All these calculations are quite complex, but at the same time very interesting. So if you have a lot of free time, you can try measuring the exact volume of water in your aquarium. However, in most cases it is quite enough to use the formula given above.

Beginner aquarists do not calculate the volume of the aquarium before moving it. Such a gross mistake becomes the reason that the reservoir will be so overpopulated that the fish will quickly die after settling. The exact volume of the aquarium is also needed when adding it to the water. medicines. If you pour more of them, you can kill your pets, and if you pour less, then there will be no result from the therapy. Due consideration is given to determining capacity.

• roulette,
• calculator,
• paper,
• pencil.

Knowing how to calculate the volume of a geometric body using a formula taught in school, the volume of a reservoir is determined. But it's not factual. The water in the tank is not topped up to the brim, and part of the area is taken up by soil.

Today, rectangular home ponds are not always made. Stores sell modern containers made of fiberglass, the front glass of which is somewhat curved, and it is more difficult to calculate the volume. In such a situation, it is easier to use a measuring container. The method is applicable for any size of reservoir.

Watch the video on choosing aquarium size.

Calculation using measuring container

Calculating the volume of an aquarium using a measuring container is easy. First, soil is placed on the bottom and decorative elements. Using the selected measuring container ( liter jar, or even better, a jug with divisions) the tank is filled to the desired height. It’s just important not to get lost and remember exactly how many times the water was poured out. Next, let's calculate the amount of water poured. The capacity of the measuring container is multiplied by the number of times it is poured. The result obtained will be the actual indicator of the area left for fish.

In containers measured in this way, you can safely use medications that require the most accurate dosage. Based on capacity, they populate the home pond with fish. The amount of water for each individual is determined taking into account the fact that it will grow to its maximum. The calculation method allows you to calculate the size of a home reservoir of any shape. When it is important to know up to a liter how much water is in the aquarium, this method should be used. When calculating, the error is reduced to zero. If you find the capacity of the measured reservoir using this method, there is no need to recheck it.

Rectangular aquarium Panoramic aquariums

Calculation by formula

Using a simple formula, it is easy to calculate an aquarium, only rectangular in shape. Initially, determine the overall size. Multiply height, width and length. The result obtained is the capacity in cubic centimeters. Then determine the capacity of the aquarium in liters. To find out how many liters it contains, you will need to multiply the resulting number by 0.001. Next, determine the actual volume of the aquarium used for fish. First you need to measure how high the container will be filled. You cannot pour water all the way to the top. They underfill it by about 5 cm. Taking this into account, they calculate the empty space in liters, taking 5 cm as the height. The resulting figure is converted into liters and subtracted from the total size. A certain displacement is already almost accurate.

Calculate how much space the soil will take up. He will also take over some of the capacity. The calculation is carried out similarly to the previous one, but only the thickness of the soil layer is taken as the height. Thus it is calculated actual size. The width indicators do not change when calculating the empty displacement.

An aquarium calculator simplifies this work. Special programs for calculating the capacity of an aquarium have a similar name. In order for the program to calculate the volume of water in the aquarium, taking into account the clarifications, the height is entered into it, taking into account how much water will not be added, and the thickness of the soil layer is entered separately. After this, an automatic calculation is carried out. If you try, you can also find an aquarium calculator for containers of complex shapes, but it is still more accurate to measure their capacity using the first method. The calculator for calculating the volume of an aquarium is convenient, but if there are doubts about the result that the automatic program has calculated, we also calculate it ourselves for reliability. A calculator for calculating the volume of an aquarium is easy to find on aquarium websites.

Some subtleties

When using the calculator, the thickness of the glass is not taken into account. This may seem like an insignificant amount, but the indicator is important if you need an accurate displacement. How to calculate how much space glass will take up is not difficult. To do this, you just need to subtract 3% from the volume of the container. This will help give the calculation maximum accuracy.

Equipment placed inside the aquarium also takes up part of its displacement. If this is not important, then you don’t have to complicate the calculation. When accuracy matters, then you must first determine how much less water there will be after installing the devices and decor. The easiest way to do this is to immerse objects in a container filled to the brim with water, and then see how much liquid they displace. To do this, you need to calculate the volume of water that will have to be added so that the vessel is filled to the top again.

Weight

Calculate the capacity of the aquarium and accurately determine the weight. When the capacity is large, a powerful stand is required. They take into account, in addition to the weight of the water, how much soil is placed in the aquarium. It is also necessary to take into account that after filling the aquarium with water, although the amount of soil will not change, it will become 2-3 times heavier. Thus, the stand on which the aquarium stands must be of increased strength. You cannot choose it based only on the weight of the dry soil for the aquarium. This way you won’t know the weight of the container.

Without calculating the capacity, it is allowed to populate an aquarium if its displacement is initially taken with a large margin relative to the fish, and treatment, if necessary, will be carried out in a separate container, the displacement of which is precisely known. Professionals speak extremely negatively about the experience of keeping an aquarium without knowing its exact size, believing that this is a low-level aquarium hobby.

Interesting videos about aquarium calculations

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