Kirby Silica Gravel 4–6mm is an aquarium-safe black gravel substrate designed to create a stable and attractive base for freshwater aquarium setups. The 4–6mm gravel size provides a practical substrate option for aquascaping and general aquarium use.

Its dark colour creates a striking contrast with aquatic plants, fish and aquarium décor, making it suitable for creating a clean, natural-looking aquarium environment.

Key Features:

• Aquarium-safe silica gravel
• Black colour
• 4–6mm gravel size
• Suitable for aquarium substrate
• Creates a stable base for aquarium setups
• Complements aquatic plants, fish and décor
• 5kg bag

Product Details:

• Brand: Kirby
• Product Type: Aquarium Gravel / Substrate
• Material: Silica
• Colour: Black
• Grain Size: 4–6mm
• Weight: 5kg

Coburg Aquarium lists this exact product as Kirby Silica Gravel 4–6mm, with a 5kg size and black colour, and describes it as aquarium-safe substrate.