Quote:
Originally Posted by m_ms09
I've started watering occassionally with MSU (12-2-14-6CA-3MG) but I'm not sure if mine is for tap water or RO water (I hear there's an MSU for each)...I think I read somewhere that mine is for tap water and should be doubled from a half teaspoon to a full teaspoon in RO...
But I have no idea!
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I'm thinking that with added Calcium and Magnesium, that must be formulated for RO water. I'd stick with formulation on label and do as they suggest - not the double mix.