There are stronger units that penetrate the water well and are suitable for deeper reef tanks and others that are less intense, making a good addition to aquariums with less demanding corals. Converting from decimals to fractions is straightforward. It does, however, require the understanding that each decimal place to the right of the decimal point represents a power of 10; the first decimal place being 10 1, the second 10 2, the third 10 3, and so on. Simply determine what power of 10 the decimal extends to, use that power of 10 as the denominator, enter each number to the right of the decimal point as the numerator, and simplify. For example, looking at the number 0.1234, the number 4 is in the fourth decimal place, which constitutes 10 4, or 10,000. This would make the fraction 1234

x 5

Taking this into account you can use the following formula to calculate the gallon capacity of your tank: US Standard Fan-Fold (aka green bar): 14-7/8″ by 11″– These are/were for the wide pin-feed (teletype / industrial / factory) printers.

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For Oscar or Cichlid fish tanks getting an external canister filter makes perfect sense as these units produce more flow and have enormous space for media, which in turn keeps the aquarium clean and safe. Selecting aquarium equipment based on the size of the tank is essential for its long-term success. Lighting Last but not least, the gallon capacity of your reef tank, for example, plays a major role in your choice of aquarium wavemaker. The US even insists on a different system of maritime navigation marks whilst everyone else not dominated by big brother uses a different internationally agreed approach.

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So if your tank can hold 20 gallons and you want to fill it with freshwater then multiply 20 × 8.345 = 166.9 pounds. To find the total surface area of your tank you’d need to find the surface areas of each of its walls, including the bottom, and add them together. The dimensions of a fish tank play a huge role in the choice of aquarium lighting because light itself has a limited water penetration. That is because in the decades prior to Personal Computer, the US Standard “Letter” Sizes were for designed for the draftsman: the kind-a guy sitting at the angled desk with the only electrical device in sight would be the light bulb (he EVEN had to manually sharpen his own pencils).

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At one time I the task of printing out blue prints stored on microfilm embedded in punch cards: I think F is the largest size I remember seeing on a regular basis but I am almost positive that they go larger than that (I mean in the US Standard Letter Sizes). as shown in the image to the right. Note that the denominator of a fraction cannot be 0, as it would make the fraction undefined. Fractions can undergo many different operations, some of which are mentioned below. Bowfront tanks are an exception to this formula because they have a curved wall which is almost impossible to calculate on your own at home.

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the numerator is 3, and the denominator is 8. A more illustrative example could involve a pie with 8 slices. 1 of those 8 slices would constitute the numerator of a fraction, while the total of 8 slices that comprises the whole pie would be the denominator. If a person were to eat 3 slices, the remaining fraction of the pie would therefore be 5 Fraction subtraction is essentially the same as fraction addition. A common denominator is required for the operation to occur. Refer to the addition section as well as the equations below for clarification. a To calculate the total weight of an aquarium you’d want to first figure out how much it weighs empty. the decimal would then be 0.05, and so on. Beyond this, converting fractions into decimals requires the operation of long division.I realize we all may have space and budget constraints but if you have the means to – go for a middle-sized aquarium. Tank Size It is often easier to work with simplified fractions. As such, fraction solutions are commonly expressed in their simplified forms. 220

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However, if you get a second-hand tank or have just forgotten what it was there is a way to calculate that.

All tanks that you buy from the store will have a label clearly stating how much water they can hold.