Hi anne:
I don't know what the "fresh start" stuff is, I'm blessed with perfect tap water that I never add anything to other than dichlor.
Please note the final part of what I said about N2:
"and the chemical change to the contents of the cartridge means it no longer has the capacity to treat "new" water." What I meant by that was that N2 can't ionize a large volume of "new" water coming into the tub. It can still do fine for the volume already in the tub
because it was already treated and you really can't beat it for tubs with low-volume use that don't go through water. I used the "Northman" method for a number of years (N2, ozonator, small amount of dichlor after each use, shock each week) and it worked GREAT when I didn't have parties every weekend.
I'd keep N2 the way you have it, you can also consider buying N2 on e-bay cheaper. Here's a good
link for a water maintenance page written by Doc that might help too.
Good Luck!
Drewski