Natural Colour Gravel / Sand / Gems 0.5-1cm (Small Stones)This high-quality gravel is ideal for using in Aquarium Fish Tanks and Vivariums. It is also an excellent hobby and craft material, and can be used for general gardening purposes - ideal for brightening up plant pots.FORMULA FOR CALCULATING REQUIRED GRAVEL PER TANKTo work out how much sand or gravel you'll require to achieve a Two Inch (2") Gravel depth in your Fish Tank please use the following formula:1) Multiply Tank LENGTH by Tank WIDTH (in inches) For example: 47" Inches x 19" Inches = 8932) Divide the answer by 10. For example: 893 / 10 = 89.33) Convert to KG Kilogrammes by dividing answer by 2.2. For example: 89.3 / 2.2 = 40.5 KG REQUIREDGENERAL GUIDELINES FOR 2" GRAVEL DEPTH60cm / 2ft TANK = 25 kg80cm / 2.6ft TANK = 30kg100cm / 3.3ft TANK = 35 kg120cm / 4ft TANK = 40 kgThese are approximates and of course you may want to have a deeper or thinner layer of gravel.
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