Primary Care Provider. A physician (M.D. â Medical Doctor or D.O. â Doctor of Osteopathic Medicine), nurse practitioner, clinical nurse specialist or physician assistant, as allowed under state law, who provides, coordinates or helps a patient access a range of health care services.
It takes about 5 minutes to ozonate water, 30 minutes for oil and from 7 to 20 minutes to ozonate food. Read more about this here.
If you fill the tank completely with cold water at 40 deg F and want it at 140 deg F, then it will take about 4 Hr. Same tank on natural gas at 50,000 BtuH will take about 45 min. If there are too many women or teenagers in ther house - then all calculations are to be tossed - there will never be hot water for you.