have two friends here in the Lubbock area that both switched from salt due to the SWGC getting clogged every few days from the Ca build-up inside of it...maybe that's the issue Deb was referring to. I'm now torn between the two choices as wellYes I understand that you make your own chlorine with swg. Another reason I am leaning toward swg is a possible shortage of chlorine. If the railways had shut down chlorine was the #1 listed as hard to get. Thanks for your input.