UNS · Stone
Ashen Stone
Minimal or river-style scapes that want bright, soft stone against lush green planting.
3 models
UNS · Stone
UNS Ancient Stone
A grey and brown stone in the same family of looks as Manten and Yama stone. Its angular, weathered shapes suit Iwagumi and it also makes a solid base under wood.
Updated
Best for
Iwagumi keepers who like the Manten look and want a slightly darker, more angular stone.
What stands out
- 5, 10, 20 and 30 lb lots
- Mixed grey and brown tones
- Angular, weathered forms
- Suits Iwagumi and nature-style scapes
Models and specs
| Model | Weight |
|---|---|
| 5 lbMJ121105 | 2.3 kg |
| 10 lbMJ121110 | 4.5 kg |
| 20 lbMJ121120 | 9.1 kg |
| 30 lbMJ121130 | 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
- Grey and brown
- Texture
- Angular, weathered faces
- 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
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
UNS · Stone
Black Mountain Seiryu Stone
Iwagumi and nature layouts where you want Seiryu shapes in a darker, moodier colour.
3 models
Frequently asked questions
Quick answers about the UNS Ancient Stone, drawn from its specs.
Does Ancient Stone affect water chemistry?
Not stated by the seller; do a vinegar fizz test and check KH/GH before use.
How do I prepare Ancient Stone before use?
Rinse and scrub well before use
Who is the UNS Ancient Stone best for?
Iwagumi keepers who like the Manten look and want a slightly darker, more angular stone.
What are the alternatives to the UNS Ancient Stone?
Other hardscape worth comparing: UNS Ashen Stone, UNS Black Lava Rock, UNS Black Lava Rock Cave. Add any of them to the compare table to see the specs side by side.