Spring: Often windy and cool with lows in the 40's and highs in the 60's. Summer: Hot and humid with lows in the 60's and highs in the 80's. Fall: Warm with lows in the 50's and highs in the 70's. Winter: Damp cold and often windy. Lows in the 20's, highs in the 40's. Weather Forecasts (National Weather Service)
Alkalinity Balance, pH up, pH down, Calcium Balance, Water Stabilizer, and clarifier are all swim-safe chemicals. Wait about 20 minutes, and you are free to swim. We suggest adding algaecide, Super Erace, and shock at night, after everyone is out of the pool. It is safe to swim again the next day.
Quick Answer. Most manufacturers of algaecide say it is safe to swim in a pool treated with their product after roughly 15 minutes of application. Such algae killers are designed to be effective yet safe, according to In the Swim, which makes Algaecide 50. Continue Reading.