Aquarium Substrate Calculator
Calculate the weight of gravel or aquasoil to fill your tank to the target depth.
Substrate needed
57.6 lbs
Aim for 1–2 in for fish-only, 2–3 in for planted tanks. Rinse gravel until water runs clear.
Examples
- 20 gal, 2 in~57 lbs
- 40 gal, 3 in~144 lbs