1. What Is Fish Tank Capacity?

Fish tank capacity refers to the volume of water a tank can hold, typically measured in gallons. Knowing your tank's capacity is essential for proper fish stocking, filtration setup, and medication dosing.

2. How Does The Calculator Work?

The calculator uses the standard volume formula:

Where:

• \( L \) — Length in inches
• \( W \) — Width in inches
• \( H \) — Height in inches
• \( 0.00433 \) — Conversion factor from cubic inches to gallons

Explanation: This formula calculates the internal volume of a rectangular aquarium and converts it from cubic inches to US gallons.

3. Importance Of Accurate Volume Calculation

Details: Accurate volume calculation is crucial for determining appropriate fish stocking levels, selecting the right size filter and heater, and properly dosing water treatments and medications.

4. Using The Calculator

Tips: Measure the internal dimensions of your tank in inches. Enter length, width, and height. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why measure internal dimensions instead of external?
A: Internal dimensions give the actual water volume capacity, while external measurements include the thickness of the glass/acrylic.

Q2: Does this work for irregularly shaped tanks?
A: No, this calculator is designed for standard rectangular aquariums. Cylindrical and other shaped tanks require different formulas.

Q3: How accurate is the conversion factor?
A: The factor 0.00433 is derived from the fact that 1 US gallon = 231 cubic inches (1/231 ≈ 0.004329).

Q4: Should I account for substrate and decorations?
A: For biological load calculations, use the full volume. For medication dosing, consider the actual water volume after accounting for displacement.

Q5: Can I use this for metric measurements?
A: This calculator uses inches. For centimeters, you would need a different conversion factor (1 liter = 1000 cm³).