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.
Once you know the amount of combined chlorine you can effectively shock the pool. A good rule of thumb is to bring the chlorine level up to 5-10 ppm in your pool and try to keep it there for 18-24 hours. 36 hours is even better. I prefer to err on the high side so 10 ppm is the number I shoot for. You may need to add some chlorine neutralizer after this if you plan on swimming right after the treatment. You can also take the amount of combined chlorine and multiply that number by ten and then bring the free chlorine level up to that level. Usually a shock treatment of 10 ppm will cover most combined chlorine ranges unless your number is super high.