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Supplements & Additives

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  • Microbial Supplements (3) items
  • Silicas (5) items
  • Enzymes (4) items
  • Bloom Enhancers (6) items
  • Flushing Agents (5) items
  1. Advanced Nutrients (59) items
  2. Aptus (13) items
  3. Athena (13) items
  4. Big Time Hydroponics (5) items
  5. BioAg (10) items
  6. BioBizz (14) items
  7. Botanicare (30) items
  8. Canna (14) items
  9. Cultured Solutions (12) items
  10. Cutting Edge Solutions (42) items
  11. Down To Earth (5) items
  12. Dyna-Gro (5) items
  13. Emerald Harvest (10) items
  14. FoxFarm (31) items
  15. General Hydroponics (25) items
  16. GreenGro (11) items
  17. Grotek (6) items
  18. Grow More (13) items
  19. Heavy 16 (15) items
  20. House & Garden (44) items
  21. Humboldt County's Own / Emerald Triangle (0) items
  22. Mad Farmer (26) items
  23. Microbe Life (8) items
  24. Mills Nutrients (6) items
  25. Nectar For The Gods (40) items
  26. New Millenium (5) items
  27. Plant Success (0) items
  28. Power Si (0) items
  29. Roots Organics (32) items
  30. SLF-100 (0) items
  31. Soul (7) items
  32. Super Natural (6) items
  33. TechnaFlora (20) items
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23 Items

  • Big Time Rinse, 1 gal
    Big Time Rinse, 1 gal
    Special Price $44.06 Regular Price $57.95
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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
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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
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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
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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
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  • Family Group Image of Big Time Enzyme
    Big Time Enzyme
    The price depends on the options chosen on the product page
    From $47.48
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  • Family Group Image of Mills Nutrients C4
    Mills Nutrients C4
    The price depends on the options chosen on the product page
    From $58.28
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  • Family Group Image of Mills Nutrients Ultimate PK
    Mills Nutrients Ultimate PK
    The price depends on the options chosen on the product page
    From $49.28
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  • Family Group Image of Mills Nutrients Vitalize
    Mills Nutrients Vitalize
    The price depends on the options chosen on the product page
    From $112.05
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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 $40.00
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  • Family Group Image of SLF-100
    SLF-100
    The price depends on the options chosen on the product page
    From $119.75
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  • Big Time Enzyme, 1 gal
    Big Time Enzyme, 1 gal
    Special Price $50.25 Regular Price $56.99
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  • Big Time Enzyme, 2.5 gal
    Big Time Enzyme, 2.5 gal
    Special Price $92.61 Regular Price $120.99
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  • Big Time Enzyme, 1 qt.
    Big Time Enzyme, 1 qt.
    Special Price $22.30 Regular Price $22.95
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  • Image of Humboldt County's Own Sonic Bloom, 50 lbs
    Humboldt County's Own Sonic Bloom, 50 lbs
    Special Price $772.50 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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  • Image of Mills Nutrients C4, 1 Liter
    Mills Nutrients C4, 1 Liter
    Special Price $58.28 Regular Price $89.99
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  • Image of Mills Nutrients Ultimate PK, 1 Liter
    Mills Nutrients Ultimate PK, 1 Liter
    Special Price $49.28 Regular Price $74.99
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  • Image of Mills Nutrients Vitalize, 500ml
    Mills Nutrients Vitalize, 500ml
    Special Price $112.05 Regular Price $200.00
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  • Image of SLF-100 275 Gallon
    SLF-100 275 Gallon
    Special Price $15,079.17 Regular Price $22,440.00
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  • Image of SLF-100 Quart
    SLF-100 Quart
    Special Price $31.95 Regular Price $37.79
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  • Image of SLF-100 15 Gallon
    SLF-100 15 Gallon
    Special Price $1,129.24 Regular Price $1,435.14
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