Cleaner, Low-Maintenance Aquaculture Tanks
Hayashi Trout Farm began collaborating with Octaform in 2006, initially focusing on the need for a cleaner, more hygienic solution for their aquaculture tanks. Japan’s humid climate accelerated biofilm buildup on traditional concrete and fiberglass tanks, prompting Hayashi to adopt Octaform’s integrated PVC liner system for improved cleanliness and maintenance.
Project Partners
- Hayashi Trout Farm
Following the devastating 2011 earthquake, seismic resilience became a critical factor in future tank construction decisions. Octaform’s formwork and liner system, proven through rigorous seismic testing at the University of British Columbia (UBC), demonstrated unmatched performance in protecting reinforced concrete structures against spalling and leakage during severe earthquakes. This feature provided Hayashi with enhanced structural security and peace of mind as they expanded operations across Japan.

Outcomes
Over the years, Hayashi has implemented various tank configurations using Octaform, including round tanks, straight channels, D-ended raceways and octagonal tanks. This adaptability has enabled Hayashi to tailor their infrastructure to meet specific operational needs while maintaining durability and performance.
In 2024, Hayashi completed their latest project, a two-cell octagonal tank configuration serving as a pilot for a salmon farm in the south of Japan. This innovative design reflects their continued commitment to advancing aquaculture practices with durable and efficient infrastructure.
Hayashi Trout Farm
Hayashi Trout Farm, a family-owned business with a rich history, has been a leader in aquaculture innovation since its founding in 1935. With operations in Japan’s Fukushima region and beyond, Hayashi has consistently sought solutions to improve tank performance and fish health.


Conclusion
By choosing Octaform, Hayashi Trout Farm achieved:
- Enhanced tank hygiene, reducing biofilm buildup
- Improved structural integrity and seismic resilience
- Flexible tank configurations to optimize space and functionality
The collaboration between Hayashi Trout Farm and Octaform highlights how innovative design and engineered solutions can provide both immediate operational benefits and long-term resilience in challenging environments.