Aquarium Rocks, Black Lava Stone for Planted Tanks, Terrariums, Moss and Epiphyte Aquascape Layouts

Black lava aquarium rocks give planted tanks and terrariums a rugged foundation while their jet-black to charcoal color brings plants and wood into sharper focus.

Natural crevices and varied pieces create depth, shadows, and convincing rock formations. Choose a per-pound option, Nano Bag, or Mega Kit to match the scale of your layout.

Key Features

• The highly textured volcanic surface adds visible depth and makes each arrangement feel more natural from multiple viewing angles.
• Deep crevices provide practical anchoring points for mosses, while the porous surface suits ferns and other epiphytic plants.
• High porosity offers ample surface area for beneficial bacterial colonization within an established aquarium.
• The dark stone creates dramatic contrast against greenery and driftwood, making plant shapes and natural wood tones easier to appreciate.
• Fully inert rock will not harden water or change pH, preserving the water conditions planned for the aquarium.
• Its rugged form complements driftwood in ryoboku-style layouts and works as a structural base for planted compositions.

Specifications

• Brand: WIO
• Stone type: Igneous volcanic rock
• Color: Jet-black to charcoal
• Texture: Highly textured with natural volcanic crevices
• Size range: 1–12 in (2.5–30 cm), depending on kit
• Available options: Per Pound, 3.3 lb Nano Bag, and 26lb Mega Kit
• Water effect: Inert; will not harden water or change pH
• Suitable for: All fish, shrimp, plants, and terrarium animals
• Care: Rinse thoroughly and brush off loose fragments before use
• Placement: Set stones on substrate or LandForms to protect aquarium glass
• Stacking: Secure stacked pieces with ScapeBound adhesive
• Clearance: Leave small gaps from glass walls for easier long-term cleaning

Choose the format that suits your layout, prepare the stones as directed, and arrange their creviced forms into a stable foundation for moss-led aquascapes, driftwood compositions, or terrarium scenes.