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Marina LED Aquarium Kit

How much gravel would be needed with a 20 gallon aquarium?

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  • Determining how much substrate to buy for your new aquarium depends on the size and shape of your tank, as well as the depth of the substrate bed you wish to achieve. We suggest 1 pound of substrate per gallon, to achieve a 1 inch bed or 2 pounds per gallon, for a 2 inch deep bed.

    By on Mar 22, 2018 Report

  • I chose 20 lbs. 10 lbs sand, covered by 10 lbs of gravel. But I have a live planted aquarium, so the sand will help with rooting.

    By JohnAaron on Jul 2, 2020 Report