Substrate calculator
Enter the tank footprint and the depth you want. You'll get how much gravel, sand or soil to buy.
For a flat bed, use the same number for both.
Result
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Enter your numbers
Enter the tank footprint and the depth you want. You'll get how much gravel, sand or soil to buy.
For a flat bed, use the same number for both.
The calculator multiplies length by width by the average depth to get the volume of substrate. It then uses a typical weight per liter for each type. Gravel and sand run heavy. Aquasoil is much lighter, which is why soil bags are sold by the liter.