Hatchery Supply Water Quality Concerns

Ammonia 0.0125 ppm
Chlorine 0.03 ppm
Copper 0.006 ppm in soft water
Hydrogen Sulfide 0.002 ppm
Lead 0.03 ppm
Nitrogen less than 102% of saturation
Solids (suspended and settleable) 80 ppm
Zinc 0.03 ppm
Dissolved Oxygen (DO) 5 - saturation
Carbon Dioxide 0 - 10 ppm
Alkalinity 10 - 400 ppm
pH 6.5 - 8.0
Hardness 10 - 400 ppm

From: Fish Hatchery Management