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Substrate Calculator
How much substrate do you need? Enter your tank footprint and the desired depth — we'll give you the volume, weight and how many bags to buy.
Typical depths: 2–3 cm fine sand for bottom-dwellers, 5–8 cm planted substrate (including a nutrient layer), or ~2 cm of cap over a soil base.
How Much Substrate
Volume Needed
9.00 L
Weight
8.1 kg
0.9 kg/L
2 L Bags
5
usual retail size
2 L Bags
5
if buying small bags
Buy slightly more than you need — substrate settles over the first weeks and you'll want a little left to top up slopes. Rinse sand and gravel before adding.
Related Reading
Guides that cover this topic in depth