Question: my present bottle of CalMag+ is $18 for a quart ... yesterday, in the hardware store's garden section, I saw a quart of 'Calcium' additive (no magnesium or iron, like the CalMag+) ... it was about $8/qt. ... I'm wondering if I will miss the mag. and iron boost ... ?? (Cinderella99 has reputation of being magnesium hog) :smokin: