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Fish Tank Gravel Calculation

How to Calculate Your Fish Tank Gravel

reading time: 3 minutes

How to Calculate Your Fish Tank Gravel

Fish Tank Gravel Calculation – gravel stones are not only a healthy substrate for your fish tank, but they are also a great feature, too. But how much gravel do you put in your tank? Is it enough? These questions may come to light before calculating how much gravel to put in your fish tank.


Working out the amount of gravel to use for a 2-inch gravel depth in your Fish Tank: 

Fish Tank Gravel Calculation Guide

So just how much gravel should you be putting in your tank?

Here’s the Fish Tank Gravel Calculation Guide:

 1: Multiply the length of the tank by the width of the tank – For example 30 inches x  12 inches = 360 inches

2: Divide the answer by 10 – For example 360 inches / 10 = 36

3: Convert your answer into kg (kilograms)- to do this divide the answer by 2.2 – For example 36 / 2.2 = 16.4 Kg

ANSWER = 16.4 Kg!  The amount of gravel needed for your fish tank!

Fish Tank Gravel Calculation Guide

*These are approximate calculations and you may want to have a deeper or thinner layer of gravel in your fish tank*

Now you know the amount of gravel needed, please see some options of gravel that you can purchase via our online store:

Marina Decorative Gravel Surf

Marina Decorative Gravel in “Surf”

Unipac Verona Gravel in “Rosso”

For more information and advice, speak to our team members in store or contact us on 01902 494860

Check out the Guide to Cleaning your Aquarium and Controlling Algae Buildup

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