<p>pH and EC meters are digital instruments that measure the acidity (pH 0-14) and electrical conductivity (EC, in mS/cm) of your nutrient solution and runoff — the two numbers that decide whether your cannabis plants eat properly or starve in a full reservoir. If you're feeding in soil, coco, or hydro and you're not measuring both, you're guessing. Azarius has stocked grow instruments since 1999.</p>
