Black River Slate Aquarium Rocks in 5LB–30LB Sizes for Natural River, Lake and Terrarium Hardscape

Black River Slate aquarium rocks add a dark, water-worn look to river- and lake-inspired aquascapes. Their semi-round shapes can be stacked for layouts, accents and waterfall features, and the same natural stone can also be used in terrariums, paludariums and similar planted enclosures.

Each selectable option is sold by weight: 5LB, 10LB, 20LB or 30LB. Natural pieces vary in shape, size and density, and the coloration darkens when wet. Rinse thoroughly before use to remove natural dust or sediment; the stone may slightly alter water parameters.

Features

• Black to dark grey coloration with occasional brown and white streaks
• Semi-round shape that resembles water-worn stones
• Suitable for river- or lake-inspired aquascaping layouts
• Can be stacked for hardscape structures and waterfall features
• Suitable for terrariums, paludariums and similar planted enclosures
• Natural pieces vary in shape, size and density

Specifications

• Product type: Natural aquascaping rock
• Stone name: Black River Slate
• Color: Black to dark grey with occasional brown and white streaks
• Shape: Semi-round
• Weight options: 5LB, 10LB, 20LB, 30LB
• Care: Rinse thoroughly before use
• Important note: Natural stone may slightly alter water parameters; coloration darkens when wet

Frequently Asked Questions

What weight options are available for Black River Slate?

The available options are 5LB, 10LB, 20LB and 30LB.

Can these rocks be used in a terrarium?

Yes. The stone is suitable for terrariums, paludariums and similar planted enclosures.

Will every piece have the same shape and size?

No. Natural pieces vary in shape, size and density.

How should I prepare the rocks before placing them?

Rinse the stones thoroughly before use to remove natural dust or sediment.

Can the rocks affect aquarium water?

They have the potential to alter water parameters slightly, so monitor the setup after adding them.