Sure does and thanks for the clarity man ... wll explained ... I must apologise for drawing it out of you like this but there's a lot of people who are too shy to ask . I agree with you , the salt most of us use contain more or less what we need on a longer term to maintain cal , alk and mag of the water but we dose to feed additional consumption of minirals by our corals ect. or at least that's how I have it