UNS · Stone
Ancient Stone
Iwagumi keepers who like the Manten look and want a slightly darker, more angular stone.
4 models
UNS · Stone
UNS Marsh Stone
A light grey, softly rounded stone with cream and white hints, similar in feel to Hakkai. It still has grooves and cracks for moss and epiphytes but no sharp edges.
Updated
Best for
Calm Iwagumi or community tanks that want a Hakkai-like look at a lower price.
What stands out
- 5, 10, 15 and 30 lb lots
- Light grey with cream and white
- Rounded with grooves and crevices
- Safe for sensitive-finned fish
Models and specs
| Model | Weight |
|---|---|
| 5 lbMJMS11705 | 2.3 kg |
| 10 lbMJMS11701 | 4.5 kg |
| 15 lbMJMS11715 | 6.8 kg |
| 30 lbMJMS11703 | 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
- Light grey with cream and white
- Texture
- Rounded, grooved
- 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 Marsh Stone, drawn from its specs.
Does Marsh Stone affect water chemistry?
Not stated by the seller; do a vinegar fizz test and check KH/GH before use.
How do I prepare Marsh Stone before use?
Rinse and scrub well before use
Who is the UNS Marsh Stone best for?
Calm Iwagumi or community tanks that want a Hakkai-like look at a lower price.
What are the alternatives to the UNS Marsh 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.