Gravel Calculation Formula:
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The Fish Tank Gravel Calculator helps determine the amount of gravel needed for your aquarium substrate. It calculates the volume in cubic yards based on your tank dimensions.
The calculator uses the following formula:
Where:
Explanation: The formula calculates the volume in cubic feet then converts to cubic yards (since 27 cubic feet = 1 cubic yard).
Details: Correct gravel amount ensures proper biological filtration, plant growth, and aesthetic appeal while avoiding waste or insufficient coverage.
Tips: Measure your tank's interior dimensions. Typical gravel depth is 1-3 inches (convert to feet by dividing by 12). All values must be positive numbers.
Q1: How much gravel do I need for a standard tank?
A: For a 55-gallon tank (48"×12"), 1-2 inches of gravel would need about 0.15-0.3 cubic yards.
Q2: Should I account for tank decorations?
A: Yes, reduce the length/width measurements if large decorations will occupy floor space.
Q3: What if I want different depths in areas?
A: Calculate each section separately, or use an average depth.
Q4: Does gravel type affect the calculation?
A: The volume calculation remains the same, but weight will vary by material density.
Q5: How often should gravel be replaced?
A: Gravel rarely needs full replacement if properly maintained, but partial changes during cleaning are beneficial.