UNS · Stone
Ancient Stone
Iwagumi keepers who like the Manten look and want a slightly darker, more angular stone.
4 models
UNS · Stone
UNS Black Ridge Stone
A layered, jagged stone in dark charcoal and earthy brown, with tiny reflective flecks that catch the light. The irregular ledges stack well into slopes and cliff faces.
Updated
Best for
Layered mountain or tide-pool style scapes where you want to build height with stacked ledges.
What stands out
- 30 lb (about 13.6 kg) box of varied sizes
- Charcoal and brown tones with a subtle glint under LEDs
- Rugged, layered edges for slopes and terraces
- Good ledges for moss and rhizome plants
Specs
| Model | Weight |
|---|---|
| 30 lb boxUNSH2762-30 | 13.6 kg |
- Brand
- UNS
- Effect on water
- Not stated by the seller; do a vinegar fizz test and check KH/GH before use
- Colour
- Dark charcoal and earthy brown with fine flecks
- Texture
- Rugged, layered and irregular
- Prep
- Rinse and scrub well; the seller advises against boiling
Figures from Glass Aqua's product listing. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all hardscape
UNS · Stone
Ashen Stone
Minimal or river-style scapes that want bright, soft stone against lush green planting.
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UNS · Stone
Black Lava Rock
Budget-friendly builds, nano tanks and moss-covered scapes that need plenty of stone volume.
1 model
UNS · Stone
Black Lava Rock Cave
Shrimp and nano tanks that need hiding spots, or scapers wanting planted pockets at different heights.
4 models
Frequently asked questions
Quick answers about the UNS Black Ridge Stone, drawn from its specs.
Does Black Ridge Stone affect water chemistry?
Not stated by the seller; do a vinegar fizz test and check KH/GH before use.
How do I prepare Black Ridge Stone before use?
Rinse and scrub well; the seller advises against boiling
Who is the UNS Black Ridge Stone best for?
Layered mountain or tide-pool style scapes where you want to build height with stacked ledges.
What are the alternatives to the UNS Black Ridge Stone?
Other hardscape worth comparing: UNS Ancient Stone, UNS Ashen Stone, UNS Black Lava Rock. Add any of them to the compare table to see the specs side by side.