I use MC 1.0 in DWC, with CalMag during veg, but nothing else.
My RO water has pH about 9, and a ppm500 of about 15.
1 g MC mixed with 1 Gallon water produces a ppm of about 125.
The mixture is light brown, and does stain roots slightly.
There is a small amount of insoluble brown powder that settles to the bottom.
No foam or froth.
I also use clorox, 1 drop per Gallon per day to keep root rot away.