Hot springs.
Pool hustler are sometimes called, "Pool Sharks".
Another name for a pool shark is a hustler — someone who plays pool very well, often tricking others to win money.
Another name for Solomon's Pool is "Ain Sukhne." This site is often associated with the biblical figure Solomon and is located near Bethlehem in the West Bank. It consists of a series of large, ancient water reservoirs that have historical significance.
Brodney Pool's birth name is Brodney Depaul Pool.
They vary from one pool to another.
A geothermal pool is called a reservoir.
Pool of reporters or Press pool or Media pool
Gene Pool's birth name is Dennis McKibben.
i am not to sure about the calcium part of this, but i know that Bromine is just like clorine, you can buy the product you are looking for at a different pool store because maybe it is just your pool store that isn't selling it
Billiards.
Pool of Bethesda
A possible last name that rhymes with "pool" is "Drool".