I use B-ionic 2 part everyday in my tank. It's a little tricky at first if you don't have decent test kits to tell how much alk and ca your tank is using. Your Mg is probably a little low and that is why you are getting the little white paticles. Atleast that is the case in my tank. I see the little white "snowflakes" (that's what my wife calls them) after I dose for alk. if my Mg level is low. For instance, if I see the "snowflakes" and test for Mg it's usually in the 1000 to 1100ppm range. After I raise the Mg levels back up to 1300 to 1400ppm, no more "snowflakes".