Who's Using Dolomite Sand??
 

OK, here is another point from a Calgary thread:

"If you reside in Calgary, and use the local water as I do, there is no need to use aragonite. Our water is high in pH, and Calcium Carbonate (not to mention the Magnesium). Using just plain old silica sand for your DSB is perfectly acceptable, and very inexpensive. Please don't use the leaching of silicates urban legend. The only problem is the brown color. The tank will look dull. I have done what I mentioned, and had no problems at all."

The question NOW is: Okay to use Dolomite sand with Calgary water? It seems in this case one would apply the same cautions (magnesium levels, etc) - only more stringently.

OR again, MIX IT UP: Dolomite underneath, with an inch or more of Aragamax over top, and hopefully some live sand topmost.

AJ