Black Seiryu Rock
Part no.
BA8332
Black Seiryu Rock
One hand-picked piece of black seiryu stone, sold individually. Bioscape Black Seiryu Rock is a naturally occurring aquascaping stone in deep charcoal tones with fine white mineral veining, sold as a single piece rather than by the kilo or the box – useful for topping up an existing layout or picking one specific shape.
Key features
- Genuine seiryu-style stone – the same charcoal-and-white mineral rock used in Iwagumi and Japanese-style aquascapes, sold here as an individual piece.
- Sold by the piece, not weight – pick this listing when you want to add or replace a single stone rather than commit to a full kilo or box.
- Each piece is unique – natural stone, so shape, weight and exact colouring vary piece to piece; the photo is representative, not the exact piece you'll receive.
- Suits caves, ledges and ridgelines – a workable shape for building structure into an existing scape.
Specifications
| Sold as | Material | Colour | Water type |
|---|---|---|---|
| Single piece | Natural seiryu-style stone (calcareous) | Charcoal / black with white veining | Freshwater and marine safe |
Bioscape doesn't publish a weight or dimension figure for the individual piece – it's a natural product picked and sold by the piece, and size varies. We're not printing a figure we can't confirm.
Suitable for, and not suitable for
Suitable for freshwater and marine aquascapes, and for terrariums, where a hard, mineral-rich stone is wanted for structure or an Iwagumi-style layout. Not a good match for soft, acidic setups – seiryu-type stone is calcareous and will gradually raise KH, GH and pH as it weathers, which makes it a poor choice for species that need soft water, such as many tetras, wild-caught shrimp and Apistogramma, or for plant-heavy layouts relying on low mineral content.
Preparation
Rinse the piece thoroughly before adding it to a tank to clear dust from handling. Because it's calcareous, it's worth running a bucket test first – leave it in a container of your tap or RO water for a few days and check KH, GH and pH before and after, so you know what to expect in the display tank. Washing it well reduces, but doesn't eliminate, its effect on hardness over time.
Warranty and delivery
Covered against being not as described under Australian Consumer Law. As a natural product, the piece you receive will vary from the listing photo in exact shape and colour – that's expected, not a fault.
Common questions
Will this raise my water hardness?
Yes, gradually. Seiryu-style stone is calcareous and slowly releases calcium carbonate, raising KH, GH and pH over time. Wash it well and bucket-test it first if you're running a soft-water tank.
Is it safe for shrimp?
It's not ideal for wild-caught or soft-water shrimp species, since the hardness rise it causes suits harder-water setups better than soft, acidic ones. Hardier, harder-water-tolerant shrimp are generally fine with it.
Will I get the exact piece shown in the photo?
No – this is a single natural piece and the photo is representative of the stone type, not a guarantee of the specific piece you'll receive.
Can I use it in a terrarium as well as an aquarium?
Yes – it's suited to both freshwater and marine aquascapes and to terrarium hardscaping.
