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Dark Blue Slate Stone is a fine-grained sedimentary rock admired for its bold tones and clean planes. Its natural layering makes it perfect for cliff builds, terraced aquascapes, and bold scaping designs. Its striking dark coloration creates contrast against plants and substrate, giving aquascapes a modern, dramatic aesthetic.
Origin: Northern India – fine-grained slate
Water Chemistry Impact: Inert and stable; does not affect pH or hardness (KH & GH)
Compatibility: Great for planted tanks; safe for shrimp, snails, and community fish
Restrictions: Avoid unstable stacking; sand broken edges if sharp
Aquascape Style: Bold, layered designs; dramatic cliff formations
Placement: Flat bases, layered midground, or vertical cliff builds
Special Features: Dark coloration, layered surfaces, inert and shrimp safe
Water: Stable and inert; safe for all freshwater tanks
Tank Size: Suitable for nano aquariums and larger scapes
Substrate Pairing: Complements sand, soil, and plant-heavy layouts
Design Tip: Stack at angles to create tiered cliff effects
Appearance: Flat layered stone with bold lines
Color: Deep blue-gray to nearly black
Texture: Smooth, fine-grained, with layered planes
Impact: Adds drama, modern aesthetic, and depth
Preparation: Rinse thoroughly before use
Placement: Avoid unstable stacks; check for pressure points
Maintenance: Fully inert; smooth surfaces may show algae growth
Special Tips: Perfect for cliff or terrace-style aquascapes
We ship orders within the contiguous United States. Ready-to-ship orders are processed within 1-3 business days. Please email us regarding the processing time on custom orders.