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 Slate
Black and grey slate with small white striations. The flat profile makes it easy to stack into caves and terraces, and it splits readily for paths and moss-wrapped accents.
Updated
Best for
Cave builds, terraces and moss stones in any size of tank.
What stands out
- 5, 10, 20 and 30 lb lots
- Deep black and grey
- Flat, stackable slabs
- Breaks easily into smaller pieces
Models and specs
| Model | Weight |
|---|---|
| 5 lbMJSS11015 | 2.3 kg |
| 10 lbMJSS11011 | 4.5 kg |
| 20 lbMJSS11012 | 9.1 kg |
| 30 lbMJSS11013 | 13.6 kg |
- Brand
- UNS
- Effect on water
- Inert
- Colour
- Black and grey with fine white streaks
- Texture
- Flat, layered
- Prep
- Rinse and scrub well before use
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.
3 models
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 Slate, drawn from its specs.
Does Black Slate affect water chemistry?
Inert.
How do I prepare Black Slate before use?
Rinse and scrub well before use
Who is the UNS Black Slate best for?
Cave builds, terraces and moss stones in any size of tank.
What are the alternatives to the UNS Black Slate?
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.