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Calculator - dosage of CO2 in the aquarium

Ile co2 w akwarium? Dawkowanie co2 w akwarium.
The online calculator by entering the pH and kH values ​​to calculate the concentration of CO2 in the aquarium.                

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Rainwater tank

The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description      
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Calculate how much you drink pure ethanol

On the basis of the data entered, the amount of drink and the percentage of alcohol content calculator calculates pure ethyl alcohol that we consume.
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Battery charging time calculator

Calculator to the data calculates the estimated time of charging.            
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Insulation of wall

Jak policzyć izolację ścian?
Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Calculator burning fuel, LPG​​, gasoline for your car

Calculator based on the length of stay and average fuel cost of fuel (gasoline or gas) will calculate how much you pay for fuel.                    
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Statistical calculator

Calculator allows to determine the basic statistical parameters such as standard deviation, arithmetic mean, variance, and median for the values.
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The volume of a cube

The calculator allows you to calculate the volume of a cube.
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Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.