Substrate Calculator
Estimate how much gravel, sand, or aquasoil you need based on tank shape and desired depth.
Substrate Volume (L)
9
Substrate Weight (kg)
14.4
31.75 lb
Bags Needed
3
Rounded up to whole bags. Allow extra for slopes and layout changes.
Related Guide
Use substrate depth based on plant roots and hardscape goals, not aesthetics alone.
For high-impact aquascapes, a sloped bed usually improves depth perception and circulation.
When buying substrate, add a 10-15% buffer to avoid running short during layout.
FAQ
How deep should substrate be?
Typical depth is 3-5 cm for simple setups and 5-8 cm for planted layouts.
Do I need more substrate for sloped aquascapes?
Yes. Increase average depth to account for front-to-back slope.
Why are bag estimates approximate?
Different brands vary in density and package net weight.
Which substrate is best for plants?
Aquasoil generally offers better nutrient support for rooted plants.
Can I mix substrate types?
Yes. You can estimate layers separately and then sum the total weight.
Did this answer your question?
Actual density varies by brand and grain size. Enter the package net weight to calculate how many whole bags to buy. Results are estimates based on general guidelines. Individual species may have specific requirements.