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pH and EC meters are used to measure fluids supplied to plants.
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Generally, the EC and pH measurements of hydroponic systems should be constantly checked and brought to appropriate values.
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An EC meter is used to measure the amount of nutrients in the liquid nutrient mixture.
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pH value is the measurement of the acidic value. The pH meter is used to measure it.
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Generally, most plants should have a pH value of 5.5 - 6.5.