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Supplements & Additives

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  • Microbial Supplements (3) items
  • Silicas (3) items
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  1. Advanced Nutrients (59) items
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11 Items

  • Optic Foliar SWITCH, 10 L
    Optic Foliar SWITCH, 10 L
    Special Price $131.12 Regular Price $216.99
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  • Optic Foliar OVERGROW, 4 L RTU
    Optic Foliar OVERGROW, 4 L RTU
    Special Price $51.98 Regular Price $79.99
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  • Family Group Image of Power Si Original Silicic Acid
    Power Si Original Silicic Acid
    The price depends on the options chosen on the product page
    From $44.22
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  • Family Group Image of Power Si Bloom
    Power Si Bloom
    The price depends on the options chosen on the product page
    From $26.91 Regular Price $40.00
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  • Family Group Image of Power Si Granular
    Power Si Granular
    The price depends on the options chosen on the product page
    From $53.20 Regular Price $250.00
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  • Family Group Image of Power PK Synergy
    Power PK Synergy
    The price depends on the options chosen on the product page
    From $17.58 Regular Price $28.00
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  • Family Group Image of Power Start
    Power Start
    The price depends on the options chosen on the product page
    From $32.65 Regular Price $52.00
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  • Family Group Image of Optic Foliar Switch
    Optic Foliar Switch
    The price depends on the options chosen on the product page
    From $63.95
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  • Family Group Image of Great White Mycorrhizae
    Great White Mycorrhizae
    The price depends on the options chosen on the product page
    From $26.25
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  • Image of Humboldt County's Own Sonic Bloom, 50 lbs
    Humboldt County's Own Sonic Bloom, 50 lbs
    Special Price $738.05 Regular Price $984.99
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  • Snowstorm Ultra, 15 gal
    Snowstorm Ultra, 15 gal
    Special Price $1,096.65 Regular Price $1,602.99
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