How Much Zinc Is Too Much For Fish Aquaponics in the USA
Levels of zinc should be kept between 0.03 and 0.05 ppm as most fish will become stressed at 0.1 to 1 ppm, and will start dying off at 4-8 ppm. What does too much zinc do to fish? The nmode of toxic action of zinc is uncertain. At acutely toxic concentrations it probably kills fish…
