Boston, Massachusetts, U.S.A.-based aquaculture technology firm Innovasea recently announced that its degassing solution has contributed to increased trout egg production at Utah’s Mantua Fish Hatchery.
After installing the new Innovasea vacuum degasser, the hatchery lowered total gas pressure (TGP) from highs of up to 120 percent to as low as 90 percent, exceeding the hatchery’s original goal and facilitating ideal conditions for its broodstock, Innovasea reported.
“Our team worked closely with the staff at Mantua Hatchery to analyze water conditions and explore various solutions,” Innovasea Vice President Marc Turano said in a statement. "By combining their operational insights with our technical expertise, we optimized the system to deliver consistent, impactful results for improved egg production.”
According to Innovasea, the new system passes water through a vacuum chamber with negative pressure, removing high levels of dissolved gas from the water. This process, the company said, quickly lowers TGP, helping maintain stable conditions for eggs and fry, which are sensitive to elevated gas levels.
“The Innovasea degasser is a great product and has been the perfect solution for us,” Mantua Fish Hatchery Fish Culture Coordinator Roger Mellenthin said in a release. “It’s simple but effective and requires little maintenance or repairs.”
The Mantua Fish Hatchery produces over 6 million trout eggs per year, accounting for roughly 30 percent of Utah’s farm-produced trout. The site has undergone several changes since it was built in 1910. Its most recent renovation was completed in 2024 and marked the second phase of a state-led initiative to modernize the facility and increase trout egg production by leveraging the area’s natural cold waters.
In addition to implementing the new degassing solution, the renovation also added new egg facilities, equipment disinfection stations, and barriers to block invasive species.
