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Saint340279
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ok so i just bought this brand new bluelab truncheon nutrient meter and i dont know how to use it so i dip one end in the run off water and a lil l.e.d light starts blinking next toi a set of numbers. there are numbers on both side except one side is labeled CFx700 and the other side is ECx500 so ya im growing soil so what side should i be watching and about where should my numbers be please help me someone
