Quote Originally Posted by cleancloths
Not sure I buy that it does anything for you, but your pool already has salt in it. Think about it for a few minutes.

You add chlorine as either sodium hypochlorite or calcium hypochlorite. You add borax, or baking soda or other pH up chemicals. Thus you have Cl ions an Na ions floating around in the water. That is exactly what you get when you add NaCl (salt). These ions are all dissolved in the water. When you add salt you are adding more which may or may not dissolve depending on what levels you all ready have.
considering that seawater has a salinity of about 35,000 ppm and that everything dissolves in it and that the most a pool with a SWG might have is 6000ppm your argument doesn't hold water, so to speak
You may actually create water chemistry problems
As you stated sodium and cloride ions already exists in the water, however, they are fairly neutral players in the water chemisty that goes on. All they do is add to the TDS which is not important as far as water balance chemistry goes.
, not to mention the potential for corrosion on certain metals
Here you MIGHT have a point but the actual fact is that years of use of SWG systems have not documented many corrosion problems in inground pools.
. Don't think it a good idea.
Look at the installed base of SWGs worldwide, some have been in use for about 30 years now. the addtion of salt has had no bad effects and subjectively makes the water feel more comfortable.