Paras Aqua has unveiled its groundbreaking Precision hybrid flow-through system (HFS) technology at the Fish Forum, the premier event in the Finnish aquaculture industry.
The innovative system enables precise control of water conditions in each tank, improving both efficiency and fish welfare.
“The Precision HFS allows water quality to be controlled at the tank level according to actual demand and more accurately than before,” said Tapio Kiuru, founder of Paras Aqua.
“The consistency of water quality improves fish welfare and allows more intensive water use. In the absence of centralised biological water treatment, there is no need for a water connection between the tanks.”
The Precision HFS system does not rely on biological water treatment which offers significant advantages such as lower oxygen consumption, reduced carbon dioxide production and decreased investment costs.
Developed and tested over several years, the Precision HFS has shown excellent results in both experimental and production-scale trials with rainbow trout and European whitefish. The fish exhibited strong growth, low mortality rates and exceptional feed conversion ratios. Furthermore, the chemical-free wastewater treatment ensures efficient nutrient recovery, while eliminating the need for depuration, further reducing production costs.
“In addition to low mortality, other preliminary findings on fish welfare, such as fin health, have been very promising and have encouraged the introduction of this technology into production,” said Jani Pulkkinen, chief research officer at Paras Aqua.
Paras Aqua’s technological breakthrough follows its success in the 2023 Seafood Innovations Awards, where it won the technology category. The company is also earmarked as a leading start-up in the aquaculture sector according to the 2025 Aquaculture Market Report.
