1. Product Overview
Pisces Seiryu Rock is a natural aquascaping material renowned for its distinctive grey color, intricate textures, and sharp, angular forms. Originating from Japan, Seiryu rocks are highly prized in the aquascaping community, particularly for Iwagumi and Amano-style layouts, due to their ability to create dramatic and natural-looking underwater landscapes. These rocks are suitable for aquariums, terrariums, and vivariums, providing both aesthetic appeal and a natural habitat element.

Image 1.1: Pisces 15lb Seiryu Rock as packaged, showing the natural rock pieces inside a clear bag.

Image 1.2: A selection of Pisces Seiryu Rocks, showcasing their varied shapes, sizes, and characteristic white veining.
2. Setup
2.1 Unpacking and Inspection
Upon receiving your Pisces Seiryu Rock package, carefully open it and inspect the contents.
- Approximately 1 x large piece
- 2 x medium pieces
- 3 - 4 small pieces
The exact number and size distribution may vary. Ensure all pieces are intact and free from damage.
2.2 Preparation
Before placing the Seiryu rocks into your aquarium, terrarium, or vivarium, thorough cleaning is essential to remove any dust, debris, or loose particles that may affect water quality or substrate cleanliness.
- Rinse each rock piece thoroughly under running water.
- Use a brush (e.g., a stiff-bristled brush or toothbrush) to scrub the surfaces and crevices of the rocks. This helps remove any fine dust or chalky residue.
- Continue rinsing until the water runs clear and no visible particles are dislodged from the rocks.
- Avoid using soaps, detergents, or any chemical cleaners, as these can be harmful to aquatic life and plants.
3. Placement Guidelines
Once cleaned, the Seiryu rocks are ready for placement. Consider the overall design and aesthetic you wish to achieve in your aquascape, terrascape, or vivarium.
- Place the pieces of rock directly on top of your chosen substrate.
- Arrange the rocks to create focal points, caves, or natural-looking formations.
- Ensure that larger rocks are stable and do not pose a risk of falling or shifting, especially in aquariums where they could damage the glass or injure inhabitants.
- For aquariums, consider using aquarium-safe silicone or epoxy to secure stacked rocks if necessary, preventing collapse.
- After placing the rocks, add plants and other decorative elements to complete your desired effect.

Image 3.1: Example arrangement of Seiryu rocks within an aquarium, demonstrating potential aquascaping layouts.
4. Maintenance
Once installed, Pisces Seiryu Rocks require minimal ongoing maintenance.
- Periodically inspect the rocks for algae growth or debris accumulation.
- In aquariums, algae can be gently scrubbed off during routine tank maintenance.
- Ensure that the rocks remain stable and do not shift over time, especially if they are part of a stacked structure.
5. Troubleshooting
5.1 Water Parameter Changes (Aquariums)
Seiryu rocks are known to contain calcium carbonate, which can slightly increase the pH and hardness (GH/KH) of aquarium water over time.
- Monitoring: Regularly test your aquarium water parameters (pH, GH, KH) to monitor any changes.
- Mitigation: If significant increases occur and are undesirable for your specific aquatic inhabitants, consider the following:
- Perform more frequent or larger water changes using water with lower hardness.
- Utilize reverse osmosis (RO) water for water changes.
- Incorporate pH-lowering substrates (e.g., ADA Aquasoil, Fluval Stratum) or natural buffering agents like peat moss or Indian almond leaves into your setup.
- Select fish and plant species that thrive in slightly harder, more alkaline water conditions.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Pisces |
| Model Number | AM-ROCK001 |
| Item Weight | 15 Pounds (approx. 6.8 kg) |
| Item Dimensions (LxWxH) | 5.5 x 11.81 x 5.5 inches (package dimensions, actual rock sizes vary) |
| Color | Grey (with white veining) |
| Size | Varies (assortment of large, medium, and small pieces) |
| Manufacturer | Pisces USA |
| Date First Available | November 1, 2017 |
| Target Audience | Fish, Reptiles |
7. Warranty and Support
Specific warranty information for Pisces Seiryu Rock is not provided with the product. As a natural product, variations in size, shape, and color are inherent and not considered defects.
For further inquiries or support regarding Pisces products, please visit the official websites:

Image 7.1: Promotional material for Pisces Natural Aquascape Rock, including QR codes that link to product information.




