On Friday, April 24, Mid-Norwegian Aquaculture received the fourth Aquatraz fish cage, which is the third design generation, G3.
After the hand-over, the fish cage was towed to Kipholman location in Nærøy municipality. There further 10 meter of lice skirts, totalling 18 meter of lice skirts, was implemented.
The extension in the sea lice skirts consists of non-permeable tarpaulin in the side panels of the fish cage. Tarpaulin has also been implemented at the bottom of the fish cage, extending three meters from each side along the bottom net. In total, these changes contribute to improved internal water circulation and an increase in the amount of deep water that is pulled into the cage. This will provide improved fish health and a further reduction in sea lice.
– The positive experiences with the water supply system for the first and second generation fish cages have enabled an increase in the skirt depth to as much as 18 meters for generation three, and thus improved protection from sea lice, without posing any risk to the salmon, Holm summarizes.
Update Aug 28th: There are registered low and decreasing sea lice numbers in Aquatraz G3, without any treatment.