When is it safe to swim after adding calcium chloride?

Calcium chloride is a salt that can be used to increase the hardness of water, which can help prevent corrosion of metal pipes and fixtures. It is also a common ingredient in pool water, where it helps to maintain the pH balance and protect the pool from algae growth.

As long as the appropriate amount of calcium chloride is used, and proper water balance is maintained, it is safe to swim in pool water that contains this chemical. However, if the calcium chloride concentration is too high, it can irritate the skin and eyes.

It is always a good idea to check the water chemistry before swimming in any pool, regardless of whether or not calcium chloride has been added.