Depending on quantity added -- about half hour.
Any time you like and you spread it around.
one hour
You don't need to wait -your filter system will feed it in gradually and it will spread through the water.
Most metal control products are safe to add with no harm to bathers
My pool store said wait 5 hours, but it probably depends on the amount and concentration (liquid or powder).
I'm not sure what you mean. If your qeustion is how long do you have to wait to swim after adding chlorine, it really depends. If you're adding chlorine to bring the level up to 2.0 or 3.0ppm, then wait minimum 1 hour before swimming, and be sure the filter is on. If you're shocking the pool and bringing the level up to 10-12ppm, you need to wait until the pool reaches a safe level as stated above.
i think its an hour
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.
30 min
I would wait about 3 hours.
Algecides aren't very harmful to humans or pets but for safety's sake wait an hour for most pool chemicals. If your algecide has copper as the active ingredient, wait a few hours longer just to keep the blonde-haired kids hair from going green.
It depends to your dog if your dog look ative again as he is in normal he can swim :)
2-3 months
well it depends on the swim team if they are like mine we wait a couple of days after our first meeting. but if your like the other guys you wait a long time and don't win the meet