We had an outbreak of gill disease in each year-class of juvenile salmon right from the beginning. The surface of healthy gills is both large and very thin to allow both oxygen and ion transport. As the disease develops this large, thin surface decreases and becomes thicker and in the end it reaches a stage when the secondary lamellae fuse and hence the surface for oxygen and ion transport has decreased dramatically. This causes high mortality. The gills of the surviving juvenile salmon does recover and in most cases they do not suffer from gill disease again.
Many different agents can cause a gill disease, i.e. parasites and bacteria.
Treatment against those pathogens is available. However the causative agent of the gill disease at N par III was unknown. Experts in fish diseases, both in Iceland as well as from abroad, had tried to solve the problem without success. In autumn 1994 we asked a specialist in EMF's problems, Brynjolf Snorrason at Hondin ltd. After he had measured the electric fields, electromagnetic fields and the earth energy fields in the farm he recommended certain changes in the electrical system and that the earth connection of the farm should be increased.