Aquascape setup
Aquarium Soil Calculator
Plan substrate depth, sloped layouts, bag count, buffer, and estimated cost.
- Bag planning
- Slope support
- Buffer aware
Calculator
Tank footprint and substrate slope
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Calculate to get a buy-ready substrate plan.
- Raw volume
- -
- Buffer
- -
- Settling allowance
- +5%
- Estimated installed weight
- -
Actions
Save your soil estimate
Copy a clean bag recommendation or reset the calculator for another layout.
Aquarium Soil Calculator FAQ
What does the Aquarium Soil Calculator estimate?
The calculator estimates how much aquarium soil or substrate you need from tank footprint and desired substrate depth. For sloped layouts, it uses the average of the front and back depths.
How deep should aquarium soil be?
For many planted aquariums, a practical starting point is around 4-6 cm in the front and 6-10 cm in the back. Root-heavy plants and strong background planting usually benefit from deeper rear sections.
Why does the calculator include a buffer?
A small buffer helps cover settling, hardscape adjustments, slope shaping, and planting corrections. It is usually safer to have a little substrate left over than to run short during setup.
Can I use this for sand or gravel?
Yes. The volume calculation works for any substrate type, but weight estimates vary because active soil, sand, gravel, and porous lava substrate have different densities.