1 Outdoor air pollution can cause ongoing throat irritation. Indoor pollution â tobacco smoke or chemicals â also can cause a chronic sore throat. Chewing tobacco, drinking alcohol and eating spicy foods also can irritate your throat.  Muscle strain.
Biosecurity is key to productive aquaculture systems. Biosecurity encompasses all measures designed to prevent diseases from occurring and from spreading by isolating, as much as possible, animal farm populations from external contamination. Recurring or prolonged contact with external environments (water, sediment, wildlife) favors the development of new diseases.
Intensive aquaculture requires 25-40 gallons/minute of good quality water, on demand, for each surface acre of production pond. Water should have a pH of 6.5-9.0 and no less than 20 mg/l (ppm) alkalinity or hardness. Agricultural limestone can be used to raise pH, alkalinity and hardness to the minimum required levels.