Black Allure Riverbed takes its cue from the icy torrents and rugged riverbanks of the Pyrenees. A pristine blend of pale Heaven Sand, dark gravels, and smooth pebbles forms a striking substrate that channels crystal-clear waters over obsidian-like stones. Each element-light sand grains dancing under water, shadowy gravels tracing the flow-crafts an interplay of light and dark that adds dynamic depth to your aquatic scene.

Anchoring this luminous riverbed, the Black Venom Boulder Kit supplies bold, charcoal-black stones with polished surfaces and organic shapes, evoking hefty glacial erratics smoothed by centuries of rushing currents. Their commanding presence defines focal points and frames your water’s path, while the nutrient-rich Dark Thick Artist Florabed weaves in dark, grey undertones and supports lush plant growth.

Non-toxic and inert (aside from slight hardness effects from the boulders), every component is pre-washed and ready to lay down. Whether you’re sculpting gentle slopes or carving deep channels, Black Allure gives you the tools to reimagine a wild mountain stream in your own tank.

One Universal River Kit. Infinite Aquascapes.

Your WIO River Kit is the ultimate canvas for global aquatic artistry. Designed as a Universal Base, it distills the raw beauty and soul of rivers, lakes, and streams worldwide, so you can create with freedom, not limits. Craft a stunning aquascape or transform it into a lush biotope with region-specific flora, fauna, and botanicals. It’s that simple. Just boundless creativity.

Dream aquascapes or Wild biotopes, achieving them has never been this simple, this versatile, this uniquely WIO.

• Contents (Box):
  – Black Allure Riverbed: 1 bag 2 kg (4.4 lb)
  – Dark Thick Artist Florabed: 1 bag 1.5 kg (3.3 lb)
  – Black Venom Boulder Kit: 5 kg (11 lb) ± 1 kg
• Contents (Mega Box):
  – Black Allure Riverbed: 1 bag 5 kg (11 lb)
  – Dark Thick Artist Florabed: 1 bag 3 kg (6.6 lb)
  – Black Venom Boulder Kit: 11 kg (24 lb) ± 1 kg 
• Color & Contrast: Pale Heaven Sand, deep-grit dark gravels, and glossy black boulders for dramatic interplay.
• Composition: Inert white sand, natural dark gravel, and polished clay-stone boulders with slight mineral hardness.
• Size Mix: 0.1 cm to 5 cm substrates; boulders 5–15 cm for varied scale and texture.
• Matching: Complements all Black Venom and dark-tone hardscape series.
• Results: Creates a crisp, high-contrast mountain-stream aquascape or paludarium full of drama.
• Ready to Use:
  – 100% natural, pre-washed—minimal rinsing required.
• Safety: Non-toxic; inert sand keeps pH stable (boulders may slightly raise kH).
• Versatile: Ideal for aquariums and paludariums; use standalone or mix with other WIO substrates.
• Origin: Made in Europe | Designed in Barcelona.

• Kit (Box) for tanks up to 45 cm (18 in)
• Mega Kit for tanks 60–75 cm (24–30 in)