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Black Venom Stone Boxes – Your Ready-to-Build Hardscape Kits Black Venom Stone is a dramatic, pitch-black igneous rock defined by its glossy glazed finish, jagged carved planes, and natural maze-like surface patterns. Its deep obsidian tone creates instant contrast and bold visual intensity, making it a standout choice for powerful, modern aquascapes. Dry, it shows a dark graphite sheen; underwater, it transforms into a rich jet-black stone with exceptional depth and cinematic presence. Available Sizes Mega Box – 46 lb – Ideal for 2' to 4' aquariums Standard Box – per pound Nano Bags – 4.4 lb – Smaller pieces for nano layouts Available per pound as well Each Box Includes Nano: Stones from 4"–6" Mega: Stones from 4"–15" including a signature centerpiece Why You’ll Love It ✓ Deep jet-black coloration with natural glazed accents ✓ Rugged carved surfaces with maze-like ridges and crevices ✓ Intensifies in color underwater for dramatic contrast ✓ Perfect for Iwagumi, terrain peaks, ravines, and bold structural layouts ✓ Slightly hardening igneous stone — may gently raise pH and hardness ✓ Fully safe for all livestock when parameters are monitored Design Tip Pair Black Venom Stone with Heaven Sand for a dramatic black-and-white composition, or combine with darker substrates for a refined monochrome look. Add Black Venom Nano Boulders or Silver Shadow Chips to create cohesive shadow transitions around the base. Specs & Care Stone Type: Igneous rock Color: Graphite to pitch-black dry; deep obsidian-black underwater Texture: Jagged carved surfaces with natural maze-like patterns Size Range: 4"–15" depending on box Effect on Water: May slightly raise pH and hardness Rinse thoroughly before use. Place stones on substrate or LandForms to protect aquarium glass. Secure stacked pieces with ScapeBound adhesive. Leave space from the glass for easier long-term maintenance. Safe for all fish, shrimp, plants, and terrarium animals with routine water-parameter stability.
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$9.95