The only way to lower it is by removing some or all of the water.
No. The salt is left behind in the pool , with the salt concentration becoming higher.
There is realy not that much to wary about The concentration of salt in a salt water pool is lower then the amount of salt found in tears my brothers small dog does the same thing and it is getting qiute old and is stil hail and hearty.
It should not make any difference. the salt concentration in a salt water pool is the same as the salt concentration in your body. I think you should look for answers elsewhere.
The higher the salt concentration the more water that is drawn from the bean. The lower the salt concentration the more the bean will expand.
No the concentration of salt in a saltwater pool is about equal to the amount of salt found in tears so there is nothing to worry about. as a mater of fact it is probably good for it.
Add acid
Disclaimer: I know next to nothing about fish. That said: if you want to lower the pH, muriatic acid will certainly do so, and it won't introduce any ions to a salt water pool that aren't there already (it will increase chloride ion concentration, which may or may not matter; it will also increase hydronium ion concentration, but that's the whole point).
salt water does provide a lower degree of freezing temperature but the normal amount in a salt water pool is so low that the answer is "not enough to make a difference". Protect your pool and equipment from freezing as you would if it weren't a salt water pool
a table spoon of seawater
To the best of my knowledge, no they can't. Your salt pool converts the salt into chlorine, and plankton cannot live in a chlorinated system.
the amount of salt required depends on how much water is in the pool You will need enough salt to reach a concentration of 4000 ppm (parts per million) to start. Have the water tested for salt content at your pool shop (usualy free), then add then add enough to reach 4000 ppm.
The ice caps are made of freshwater.