Description It is non-toxic and colourfast. Gravels and sands are chosen from selected silicate aggregates known for their inert properties. Sold in 2kg, 5kg & 15kg bags. Particle sizes: 0.7-1.mm. Colour: black. Colour and size variations may occur due to the geological and processing variables. Suitability: Tropical, marine, and coldwater aquariums, Terrariums and vivariums, Ponds, Water features, Potted Plants, Vases, Crafts & Hobbies, Coverage (approx.): A 2kg bag is sufficient for an area 20cm x 25cm x 2.5cm deep. 40 x 20cm aquarium – 2 bags required. 60 x 30cm aquarium – 4 bags required. 80 x 30cm aquarium – 6 bags required. 100 x 40cm aquarium – 10 bags required.
