Natural Color Volcanic Substrate Black 1-2mm 5kg

Planted tanks tend to fail at the roots long before anything shows in the leaves. A fired ceramic soil at 1-2mm is porous enough to stop that happening, and the volcanic black colour throws green foliage forward. Supplied in a 5kg bag, and suited to planted and tropical fish tanks alike.

Roots penetrate the material easily and spread right through the bed, which is what a planted tank needs from its floor.

Specification

• Size: 1-2mm
• Colour: Volcanic Black
• Material: Ceramic
• Aquarium substrate for aquarium plants
• Good water and air penetrability
• Great substrate pebble for aquarium fish tank
• Supplied in 5kg bag

Working out how much substrate 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" substrate / 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 substrate / gravel.