Natural Color Blue Aquarium Gravel 4

Bright, cool-toned tanks are difficult to build from natural substrates alone. Five kilos of 4-6mm blue gravel covers a full base at a grade chunky enough to stay put when fish dig, and open enough that debris settles where a siphon can lift it.

The same high-quality gravel suits vivariums as readily as aquarium fish tanks, and plenty of buyers use it for hobby and craft work or general gardening, where it brightens up plant pots.

Specification

• 4 - 6mm (gravel)
• Supplied in 5kg bag

Working out how much you need

To reach a Two Inch (2") gravel depth in your fish tank, measure up and follow these three steps:

1. Multiply tank LENGTH by tank WIDTH in inches. Worked example: 47" Inches x 19" Inches = 893
2. Divide that figure by 10. Worked example: 893 / 10 = 89.3
3. Divide by 2.2 to convert to kilogrammes. Worked example: 89.3 / 2.2 = 40.5 KG REQUIRED

Rough guide for a 2" gravel depth

• 60cm / 2ft TANK = 25 kg
• 80cm / 2.6ft TANK = 30kg
• 100cm / 3.3ft TANK = 35 kg
• 120cm / 4ft TANK = 40 kg

Treat these as approximates - you may well want a deeper or thinner layer of gravel.