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Supplements & Additives

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  • Veg Enhancers (16) items
  • Carbs and Sugars (1) item
  • Microbial Supplements (4) items
  • Silicas (4) items
  • Enzymes (6) items
  • Amino Acids and Vitamins (10) items
  • Bloom Enhancers (25) items
  • Cal-Mag (6) items
  • Flushing Agents (13) items
  • Full Cycle Enhancers (8) 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. Mad Farmer (26) items
  22. Micro-TES (0) 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. Roots Organics (32) items
  29. SLF-100 (0) items
  30. Soul (7) items
  31. Super Natural (6) items
  32. TechnaFlora (20) items

93 Items

  • Mad Farmer Growth Nutrient, 25 lb
    Mad Farmer Growth Nutrient, 25 lb
    Special Price $289.17 Regular Price $472.45
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  • House & Garden Algen Extract, 20 L
    House & Garden Algen Extract, 20 L
    Special Price $998.33 Regular Price $1,522.50
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  • House & Garden Magnesium Boost, 5 L
    House & Garden Magnesium Boost, 5 L
    Special Price $118.13 Regular Price $179.55
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  • House & Garden Magnesium Boost, 1 L
    House & Garden Magnesium Boost, 1 L
    Special Price $27.45 Regular Price $38.56
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  • Mad Farmer Silica, 1 gal
    Mad Farmer Silica, 1 gal
    Special Price $27.90 Regular Price $41.99
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  • Mad Farmer Silica, 6 gal
    Mad Farmer Silica, 6 gal
    Special Price $135.90 Regular Price $236.24
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  • Mad Farmer Silica, 1 qt
    Mad Farmer Silica, 1 qt
    Special Price $11.80 Regular Price $14.69
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  • Mad Farmer Silica 30 Gallon (1/Case)
    Mad Farmer Silica 30 Gallon (1/Case)
    Special Price $642.59 Regular Price $770.00
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  • SOS Beneficial Bacteria, 1 gal
    SOS Beneficial Bacteria, 1 gal
    Special Price $72.53 Regular Price $521.31
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  • Image of House & Garden Magic Green, 20 L
    House & Garden Magic Green, 20 L
    Special Price $1,208.08 Regular Price $1,974.00
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  • HEAVY 16 Foliar, 6 gal
    HEAVY 16 Foliar, 6 gal
    Special Price $428.80 Regular Price $734.99
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  • HEAVY 16 Foliar, 8 oz
    HEAVY 16 Foliar, 8 oz
    Special Price $12.10 Regular Price $17.99
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  • Mad Farmer Detox, 6 gal
    Mad Farmer Detox, 6 gal
    Special Price $205.63 Regular Price $335.99
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  • Heavy 16 Finish 10L
    Heavy 16 Finish 10L
    Special Price $114.11 Regular Price $169.99
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  • Mad Farmer Nutrient UpTake Solution (N.U.T.S.), 1 qt
    Mad Farmer Nutrient UpTake Solution (N.U.T.S.), 1 qt
    Special Price $15.60 Regular Price $19.95
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  • Mad Farmer Cal+Mag, 6 gal
    Mad Farmer Cal+Mag, 6 gal
    Special Price $147.38 Regular Price $262.50
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  • Mad Farmer Cal+Mag, 55 gal
    Mad Farmer Cal+Mag, 55 gal
    Special Price $1,113.53 Regular Price $2,173.45
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  • Mad Farmer Cal+Mag, 2.5 gal
    Mad Farmer Cal+Mag, 2.5 gal
    Special Price $79.02 Regular Price $117.08
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  • Mad Farmer Cal+Mag, 1 qt
    Mad Farmer Cal+Mag, 1 qt
    Special Price $17.70 Regular Price $21.62
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  • Mad Farmer Cal+Mag, 1 gal
    Mad Farmer Cal+Mag, 1 gal
    Special Price $29.70 Regular Price $53.71
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  • House & Garden Magnesium Boost, 20 L
    House & Garden Magnesium Boost, 20 L
    Special Price $375.98 Regular Price $682.50
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  • Mad Farmer Bloom Nutrient, 25 lb
    Mad Farmer Bloom Nutrient, 25 lb
    Special Price $289.16 Regular Price $472.45
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  • Mad Farmer Bloom Nutrient, 1 kg
    Mad Farmer Bloom Nutrient, 1 kg
    Special Price $35.35 Regular Price $52.45
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  • Mad Farmer Bloom Nutrient, 10 lb
    Mad Farmer Bloom Nutrient, 10 lb
    Special Price $120.81 Regular Price $197.35
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  • House & Garden Bud-XL, 250 ml
    House & Garden Bud-XL, 250 ml
    Special Price $22.00 Regular Price $26.24
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  • Image of HEAVY 16 Fire, 6 gal
    HEAVY 16 Fire, 6 gal
    Special Price $1,183.95 Regular Price $2,099.99
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  • HEAVY 16 Fire, 55 gal
    HEAVY 16 Fire, 55 gal
    Special Price $6,840.00 Regular Price $11,969.99
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  • Mad Farmer Be One, 1 qt
    Mad Farmer Be One, 1 qt
    Special Price $21.20 Regular Price $31.49
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  • Family Group Image of Heavy Finish
    Heavy Finish
    The price depends on the options chosen on the product page
    From $51.26
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  • Family Group Image of Heavy Fire
    Heavy Fire
    The price depends on the options chosen on the product page
    From $106.20
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  • Family Group Image of Heavy Foliar
    Heavy Foliar
    The price depends on the options chosen on the product page
    From $101.70
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  • Family Group Image of Heavy Prime
    Heavy Prime
    The price depends on the options chosen on the product page
    From $178.20
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  • Family Group Image of House and Garden Algen Extract
    House and Garden Algen Extract
    The price depends on the options chosen on the product page
    From $26.10
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  • Family Group Image of House and Garden Amino Treatment
    House and Garden Amino Treatment
    The price depends on the options chosen on the product page
    From $27.45
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  • Family Group Image of House and Garden Bud XL
    House and Garden Bud XL
    The price depends on the options chosen on the product page
    From $38.93
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  • Family Group Image of House and Garden Drip Clean -
    House and Garden Drip Clean -
    The price depends on the options chosen on the product page
    From $44.62
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  • Family Group Image of House and Garden Magic Green
    House and Garden Magic Green
    The price depends on the options chosen on the product page
    From $24.08
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  • Family Group Image of House and Garden Multi Zen
    House and Garden Multi Zen
    The price depends on the options chosen on the product page
    From $14.50
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  • Family Group Image of House and Garden Nitrogen Boost
    House and Garden Nitrogen Boost
    The price depends on the options chosen on the product page
    From $44.78
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  • Family Group Image of House and Garden Top Booster
    House and Garden Top Booster
    The price depends on the options chosen on the product page
    From $9.40
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