Well thanks to this great site and the BBB method I decided to return my swg to rural king this afternoon, after seeing how simple pool chemistry really is with the BBB method I decided I did not need the swg my water is perfect and so crystal clear because of the information I found on this awesome site. The way I look at things is K.I.S. which stands for keep it simple, keep up the great work this is the best site on the internet.....Mike