Besides not saying what it was, MCP250 could be anything from metal halide light to concret pulveriser.
SAlt has no health hazard except for high blood pressure, thats why the doctors say to keep it down, low salt crisps etc. What box is full of water. one box is suppossed to be, mixed with the salt, that is what softens it. Get some water hardness test strips. (google it) test water in and water out, If softer out, its working. if not its not
SD
May 2011