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Nutrient & Management How do I know whether to use hard or soft water feed?

April 26, 2017feed hard Management nutrient soft water

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Nutrient & Management How do I know whether to use hard or soft water feed?

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Officially, hard water is anything over pH 7. In practical terms, for growing plants hydroponically hard water feeds should only be used for very hard water generally with a pH above 7.8 and a cF value above 8-9. Soft water feed should be used in all other cases and the water will need to be pH adjusted with either nitric or phosphoric acid.