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Calculate Gallons in Fish Tank

Gallons Calculation Formula:

\[ Gallons = \frac{L \times W \times H}{231} \]

inches
inches
inches

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1. What is the Gallons Calculation?

The gallons calculation formula determines the volume of water a fish tank can hold based on its dimensions. This is essential for proper fish stocking, filtration setup, and overall aquarium maintenance.

2. How Does the Calculator Work?

The calculator uses the standard volume formula:

\[ Gallons = \frac{L \times W \times H}{231} \]

Where:

Explanation: The formula calculates the cubic volume in inches and converts it to gallons using the standard conversion factor of 231 cubic inches per gallon.

3. Importance of Volume Calculation

Details: Accurate volume calculation is crucial for determining appropriate fish stocking levels, selecting proper filtration systems, dosing medications correctly, and maintaining water quality parameters.

4. Using the Calculator

Tips: Measure the inside dimensions of your tank in inches. Enter length, width, and height as positive numbers. The calculator will provide the total water volume in gallons.

5. Frequently Asked Questions (FAQ)

Q1: Why use 231 as the conversion factor?
A: 231 cubic inches equals one US gallon, which is the standard measurement for aquarium volumes in the United States.

Q2: Should I measure inside or outside dimensions?
A: Always measure inside dimensions for accurate water volume calculation, as glass thickness reduces actual water capacity.

Q3: Does this account for substrate and decorations?
A: No, this calculates total volume. For actual water volume, subtract space taken by substrate, rocks, and decorations (typically 10-20%).

Q4: What about irregularly shaped tanks?
A: For cylindrical tanks, use π × radius² × height / 231. For other shapes, break them down into regular geometric sections.

Q5: How accurate is this calculation?
A: Very accurate for rectangular tanks with precise measurements. Always round up slightly when determining fish stocking limits.

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