After the algaecide is added, you should wait 15 to 20 minutes before going in. Be sure to test your water for chlorine and pH levels, so your pool or spa will be safe and comfortable for your users. Kem-Tek algaecides are not toxic to humans.
The Recommended Daily Allowance (RDA) of magnesium for young adults is around 400 mg/day for men and 310 mg/day for women. For adults over 30, the RDA is 420 mg/day for men and 320 mg/day for women.
Adults over the age of 19, adolescents between 14 and 18 years old and pregnant women should consume 4,700 milligrams of potassium each day, says the Food and Nutrition Board. Nursing women over the age of 14 need more: 5,100 milligrams daily.