UNS · Stone
Ancient Stone
Iwagumi keepers who like the Manten look and want a slightly darker, more angular stone.
4 models
UNS · Stone
UNS Ashen Stone
A pale, almost white stone with a smooth surface and rounded shapes. It gives a clean, minimal look and suits river layouts and bare-bottom tanks.
Updated
Best for
Minimal or river-style scapes that want bright, soft stone against lush green planting.
Worth knowing
Pale stone shows algae and diatoms quickly, and white stones are often limestone, so test it.
What stands out
- 10, 20 and 30 lb lots
- Pale grey-white colour
- Smooth and rounded, no sharp edges
- Good for goldfish and other delicate-finned fish
Models and specs
| Model | Weight |
|---|---|
| 10 lbAHS0010 | 4.5 kg |
| 20 lbAHS0020 | 9.1 kg |
| 30 lbAHS0030 | 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
- Pale grey to off-white
- Texture
- Smooth, rounded
- 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 Ashen Stone, drawn from its specs.
Does Ashen Stone affect water chemistry?
Not stated by the seller; do a vinegar fizz test and check KH/GH before use.
How do I prepare Ashen Stone before use?
Rinse and scrub well before use
Who is the UNS Ashen Stone best for?
Minimal or river-style scapes that want bright, soft stone against lush green planting.
Is there anything to watch out for with the UNS Ashen Stone?
Pale stone shows algae and diatoms quickly, and white stones are often limestone, so test it.
What are the alternatives to the UNS Ashen Stone?
Other hardscape worth comparing: UNS Ancient 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.