Application of a constant magnetic fields on the physicochemical parameters of the water, and magnetic water effect on goldfish (Carassius auratus) biophysiology

Indeed one of the most important factors in aquaculture, is water quality and quantity. Therefore, it is necessary to improve manufacturing efficiency by utilizing the related patterns. In this regard, the novel methods of magnetic water in aquaculture is considered.So in this study the effects of a constant magnetic field with an intensity of 0, 5, 15 and 25 mT on some physicochemical parameters of water and the effects of magnetic water on stress and survival of goldfish (Carassius auratus) in the period of April to December 2013 were studied.180 specimen of gold fish with an average weight of 48 gr in a three-intensity magnetic water treatment with 5, 15, 25 mT and a control group treated (0 mT) was performed. Each treatment consisted of three replicates and 15 fish. Physical and chemical parameters of waters such as TDS, NO2, NO3, NH4 and O2, showed significant differences between the control and other treatments (p