WIO - Mcdonald Lake Boulder

$9.95

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Features rare, naturally multicolored river stones with deep reds, maroons, greens, blues, and blacks that create a vibrant, authentic riverbed impression in any aquascape or terrarium. Smooth and richly patterned, each piece adds striking visual depth and natural character inspired by the iconic landscapes of Lake McDonald in Montana.

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100% natural aquascaping rock

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Rock Sizes : Per Pound Per Pound 46 lb Mega Box

Quantity

Details

Color: Naturally multicolored gradients featuring reds, maroons, greens, blues, and blacks for bold, glacial-river authenticity.

Stone Type: Mixed-origin river stones shaped and polished through long-term natural water erosion.

Texture: Smooth, river-polished surfaces with rich mineral banding and naturally varied coloration.

Matching: Ideal with river sands, rounded gravels, driftwood, and plant-heavy layouts for natural stream and biotope designs.

Results: Creates richly colored, high-contrast aquascapes with realistic riverbed flow and strong visual depth.

Ready to Use: Rinse thoroughly; brush away loose sediment; place over substrate or LandForms; secure stacked stones with ScapeBound.

Safety: May slightly raise pH and hardness; fully safe for fish, shrimp, plants, and terrarium species when parameters are monitored.

Worry-Free: Color-stable, structure-stable, aquarium-safe, suitable for both CO₂ and low-tech setups.

Versatile: Perfect for aquariums, terrariums, paludariums, mountain streams, and glacial river biotopes.

Packing: Available in 46 lb (21 kg) Mega Boxes and per-poundselections.

SHIPPING INFO

Fast and free shipping within the U.S. and Australia.

Worldwide free shipping on orders over $599!

CARE INSTRUCTIONS

Water Hardness: Some boulders may raise pH and hardness slightly.

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Fast and free
100% natural aquascaping rock
24/7 support
Over 100,000 happy aquariums

McDonald Lake Boulder Boxes

McDonald Lake Boulder is a rare, naturally colorful river stone featuring deep reds, maroons, greens, blues, and blacks. Its smooth, river-polished texture and rich mineral gradients recreate the striking, multicolored character of glacial riverbeds — bringing depth, realism, and bold natural beauty to any aquarium or terrarium.

Available Sizes
Mega Box – 46 lb (21 kg)
Available per pound too

Why You’ll Love It
✓ Rare, naturally colorful boulders with multi-tone mineral gradients
✓ Deep reds, greens, blues, blacks, and maroon tones for dramatic scapes
✓ Smooth river-polished texture for authentic riverbed layouts
✓ Ideal for nature-style and biotope aquariums
✓ Complements plants, wood, and neutral or sand-based substrates
✓ Available with matching McDonald Lake Nano Boulders and gravels

Design Tip
Use brighter stones in the foreground and darker tones in the background to create natural depth and perspective. Pair with river-style sands and gravels to echo the aesthetic of Glacier National Park streams.

Specs & Care
Stone Type: Natural mixed-origin river stones
Color: Red, maroon, green, blue, black
Texture: Smooth, river-polished with mineral gradients
Size Range: 4"–12" (10–30 cm) (larger stones available upon request)
Effect on Water: May slightly raise pH and hardness

Rinse thoroughly and brush off loose sediment. Place stones over substrate or LandForms to protect aquarium glass. Secure stacked pieces with ScapeBound adhesive. Leave a gap between stones and glass for easier long-term maintenance. If hardness increases, perform regular water changes with soft or RO water.

Safe for all fish, shrimp, and terrarium animals.