Seiryu stone cave
"I loved this stone. A good mix of sizes and shapes to fill out my cave."
Seiryu Stone is one of the most popular aquarium hardscape stones used for aquascaping and planted tanks. Known for its classic grey tones and natural textures, Seiryu Stone brings aggressive, jagged grooves to hardscape layouts. It’s available in a wide range of sizes and shapes, making it great for various aquascaping styles like Iwagumi layouts, nature-style paired with driftwood, biotopes, and more.
We’ve used Seiryu in many of our own personal scapes — from tiny 1-gallon cube tanks to larger standard aquariums that required big stones. Its application is very versatile, and its natural shapes work well for many planted aquarium styles. Seiryu Stone is a classic aquascaping rock, and we imagine it will remain a top choice for aquascapers for years to come!
Seiryu Stone in an Ultum Nature Systems 60U 20.5G standard Iwagumi planted aquarium:

Seiryu rocks submerged in our UNS 45U Iwagumi aquascape:
Overall rating: 4.769231 / 5 from 39 reviews.
Seiryu Stone is a highly regarded aquascaping rock known for its classic grey tones and natural textures. Customers appreciate its versatility and quality, making it suitable for various planted aquarium styles. Its prompt delivery and excellent purchase experience are also highlighted.
Review topics: ["size","quality","looks","pieces","packaging","box","stones","rocks","selection","hardscape","supplier","mix"].
"I loved this stone. A good mix of sizes and shapes to fill out my cave."
"The rocks quality is poor. Looks like they just put rocks together and smash them in little pieces and hope for the best. Not real natural looking. Will not buy again 30LB mix. Some of the rocks had perfect drill holes in them from a drill bit. Not impressed with the quality of rocks for 100$"
"Great products and staff. Came up with a cool layout with these seiryu stone."
"Exactly what I was looking for"
"Exactly as described. Happy with my purchase."
"Appear to be good quality stones, though I haven't yet installed into my tank. The box arrived damaged and a few pieces had chipped off."
"Excellent product quality and excellent service, always attentive to all the details of the order."
"Received excellent assortment of stones. Wasn’t sure if 5 lbs was sufficient for UNS 5N, but it was more than enough."
"This was a good set of stones. They were all about the same size. Kind of small and exactly what I needed. I added them to my current collection of Seiryu and set up a new scape in my 75p"
"Bought 60lbs came in different sizes and shapes. Perfect for my aquarium. Will be getting more soon."
Shipping
Orders are typically processed within 1-2 business days M-F. However, additional time may be required during peak seasons and federal holidays. For orders containing live plants, we exercise extra caution and assess factors such as travel distance and weather to ensure safe transit.
To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.
Returns
If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.
Refunds
No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.