UNS · Stone
Ancient Stone
Iwagumi keepers who like the Manten look and want a slightly darker, more angular stone.
4 models
UNS · Stone
UNS Grey River Slate
Flat grey slate for stacking, building ledges or stabilising driftwood. It breaks easily into smaller pieces for foreground paths or moss stones.
Updated
Best for
Stacked builds, caves, and as a stable base under wood layouts.
What stands out
- 5, 10, 20 and 30 lb lots
- Flat grey slabs
- Easy to stack or glue
- Splits into paths and accents
Models and specs
| Model | Weight |
|---|---|
| 5 lbMJBS11885 | 2.3 kg |
| 10 lbMJBS11881 | 4.5 kg |
| 20 lbMJBS11882 | 9.1 kg |
| 30 lbMJBS11883 | 13.6 kg |
- Brand
- UNS
- Effect on water
- Inert
- Colour
- Mid grey
- 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 Grey River Slate, drawn from its specs.
Does Grey River Slate affect water chemistry?
Inert.
How do I prepare Grey River Slate before use?
Rinse and scrub well before use
Who is the UNS Grey River Slate best for?
Stacked builds, caves, and as a stable base under wood layouts.
What are the alternatives to the UNS Grey River 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.