I just learned from a wholesaler that the tester I use have been having terrible trouble with their Alk. tests, so they have stopped using theirs and now use Salifert. I have stopped using it as well for Alk. Talk about a waste of $300.
@eXact iDip® I contacted them yet still no response, I guess I'm one of those suckers born every second. Bummer that few of my nicest acros just got scorched because of this tester lied to me.
Do I need to bake the baking soda to get rid of moisture? Or do I just dump it in? Would it be better to just buy soda ash?