Hi, I am also on day 2 of what i hope to be a 10-day MC.
This will be my fifth MC. My first was in Aug 2003 (12 days), then I did a 10 day in December, another 10 day in March, and then a 21-day in May.
I really recommend the SWF. As pepe wrote, it is very important to get the right kind of salt. I changed salt in my fourth Master-Cleanse and it did not work as well. It was supposed to be Sea Salt but it just didn't work right.
This time I bought new salt, dried as recommended, and it worked like a charm this morning!