Shock your pool at sundown and you can swim in it the next morning.
You don't have to swim to be strong However if you have the choice of adding it to your regime of exercise it is very good.
A person can go swimming in a pool a few minutes after adding algae treatment and shock to the water. This is provided that a low dose was used. The manufacturers of the algae treatment recommend that a person waits 45 minutes to an hour to swim after adding a normal dose.
maybe if you like to hurt yourself
Any time you like calcium is harmless
Read the label, but usually it is safe. Pool Masters
Some sources state that you can swim within fifteen minutes of adding baquacil to the pool. It is usually recommended however, to wait around an hour.
After adding conditioner, someone is advised to avoid swimming immediately or else it will rinse off. Give conditioner about an hour before swimming again.
Most metal control products are safe to add with no harm to bathers
Most 50% algaecides if added properly according to gallons of water in your pool allow you to swim immediatly after adding.
Depending on quantity added -- about half hour.
You don't need to wait -your filter system will feed it in gradually and it will spread through the water.