Marina Decorative Aquarium Gravel 10kg Marina Decorative Aquarium Gravel 10kg – Create a colourful aquascape in your aquarium with Marina Decorative Gravel. The gravel is epoxy-coated, which makes the gravel inert and also prevents any adverse effects on water chemistry. Research shows that epoxy-coated gravel provides an optimum surface for the colonization of beneficial bacteria, which in turn provide biological filtration for clear and healthy water. The gravel is dust free and is also available in a wide variety of colours. Suitable for freshwater aquariums only. Colours available in: Surf Lime Grey / Black Black How To Calculate Your Fish Tank Gravel Fish Tank Gravel Calculation – 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. Gravel stones are not only a healthy substrate for your fish tank, but they are also a great feature too. Calculation: Working out the amount of gravel to use for a 2-inch gravel depth in your Fish Tank: 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 – Also for example 36 / 2.2 = 16.4 Kg ANSWER = 16.4 Kg! The amount of gravel needed for your fish tank! Also click here for a range of Aquarium Gravel!