Volcanic Substrate for Aquariums – Natural Porous Base 5-8mm (1 kg)
Description
The Volcanic Substrate (1 kg) is a natural, porous base material ideal for planted aquariums, terrariums, and aquascapes.
Sourced from volcanic rock, this substrate is lightweight yet highly porous — creating the perfect environment for beneficial bacteria to colonise and for aquatic plant roots to thrive.
Its unique texture enhances water circulation through the substrate layer, preventing anaerobic zones while improving nutrient absorption.
Perfect for use as a base layer under active soil or as a standalone substrate in natural-style aquariums.
Key Features:
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Natural volcanic material – safe and inert for all aquarium species
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Highly porous structure encourages beneficial bacterial growth
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Improves biological filtration and oxygen flow in the substrate
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Ideal base layer for planted aquariums and aquascapes
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Can be used in terrariums and paludariums as a drainage layer
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Promotes healthy root development and prevents compaction
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Size: 1 kg bag, suitable for topping up or small aquariums
Usage Tips:
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Rinse lightly before use to remove dust.
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Use as a base layer (1–3 cm) under your main planting soil for maximum efficiency.
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Can be mixed with other substrates to enhance structure and filtration.
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Suitable for both freshwater planted aquariums and bioactive terrariums.
Delivery & returns
Free delivery across Malta on orders over €35. Orders are prepared at our shop in Ħ'Attard. See our shipping and refund policies for timings and conditions.