Salt itself is a preservative however a bag of pool salt will last indefinitely as long as it is kept dry. It may become a solid block given time however this will soon melt away once added to water. I am in the pool industry however my main business specialises in getting rid of unwanted ducks and geese.
Michael
It's length of time depends on how high your agility level is, there is no accurate time however.
salt mines
about a year
You use preservatives such as salt.
Salt stones last forever, and they can be used for all of your Howrses.
simply buy the required amount of salt for the pool from a pool shop or other salt supplier and and toss it in the water.
Yes. The water will evaporate, leaving the salt behind. Let the process go on long enough, and you'll have a brine pool of VERY salty water. The only way that salt gets out of the pool is when swimmers track the salt water away as they walk away.
I doubt anyone has done any research on this, but I changed my pool over to salt last year and I don't see any difference in bee activity.
at the pool shop
Simply put any pool can be a salt water pool, even an above ground pool.
No. The salt is left behind in the pool , with the salt concentration becoming higher.
Add salt