General Hydroponics Diamond Black 0-0-1

    51.80 51.80 51.800000000000004 USD

    51.80

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    - Derived from 100% pure mined Leonardite
    - Contains an exceptionally high percentage of plant-active humates
    - Supports beneficial microbial activity in soils
    - Increases micronutrient availability
    - Can be added to all kinds of garden soils and potting mixes
    - Can be used during all phases of plant growth