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Supplements & Additives

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  1. Advanced Nutrients (1) item
  2. Agsil (1) item
  3. Aptus (3) items
  4. Athena (2) items
  5. Botanicare (4) items
  6. Cutting Edge Solutions (4) items
  7. Dyna Gro (2) items
  8. Dyna-Gro (1) item
  9. General Hydroponics (1) item
  10. Grotek (1) item
  11. Mad Farmer (4) items
  12. Mills Nutrients (2) items
  13. Power Si (3) items

28 Items

  • Botanicare Silica Blast 15 Gallon
    Botanicare Silica Blast 15 Gallon
    Special Price $329.00 Regular Price $682.84
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  • Mad Farmer Silica, 1 gal
    Mad Farmer Silica, 1 gal
    Special Price $31.42 Regular Price $41.99
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  • Mad Farmer Silica, 6 gal
    Mad Farmer Silica, 6 gal
    Special Price $164.22 Regular Price $236.24
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  • Mad Farmer Silica, 1 qt
    Mad Farmer Silica, 1 qt
    Special Price $11.01 Regular Price $14.69
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  • Mad Farmer Silica 30 Gallon (1/Case)
    Mad Farmer Silica 30 Gallon (1/Case)
    Special Price $713.99 Regular Price $770.00
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  • Family Group Image of Athena Pro Balance
    Athena Pro Balance
    The price depends on the options chosen on the product page
    From $77.00
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  • Family Group Image of Athena Balance
    Athena Balance
    The price depends on the options chosen on the product page
    From $31.50
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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 $52.50 Regular Price $75.00
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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 $56.00 Regular Price $250.00
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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 $28.00 Regular Price $40.00
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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 $124.50
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  • Family Group Image of General Hydroponics Armor Si
    General Hydroponics Armor Si
    The price depends on the options chosen on the product page
    From $42.62
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  • Family Group Image of Cutting Edge Solutions Bulletproof Si
    Cutting Edge Solutions Bulletproof Si
    The price depends on the options chosen on the product page
    From $72.98
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  • Family Group Image of Botanicare Silica Blast
    Botanicare Silica Blast
    The price depends on the options chosen on the product page
    From $38.51
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  • Image of AgSil 50 lbs Dry Silica
    AgSil 50 lbs Dry Silica
    Special Price $441.00 Regular Price $529.20
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  • Family Group Image of Advanced Nutrients Rhino Skin
    Advanced Nutrients Rhino Skin
    The price depends on the options chosen on the product page
    From $81.25
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  • Family Group Image of Dyna-Gro Pro-TeKt
    Dyna-Gro Pro-TeKt
    The price depends on the options chosen on the product page
    From $47.50
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  • Image of Grotek Pro Silicate, 23 L
    Grotek Pro Silicate, 23 L
    Special Price $147.25 Regular Price $226.99
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  • Aptus Fasilitor, 5 L
    Aptus Fasilitor, 5 L
    Special Price $970.25 Regular Price $2,190.75
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  • Aptus Fasilitor, 500 ml
    Aptus Fasilitor, 500 ml
    Special Price $190.25 Regular Price $267.44
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  • Image of Cutting Edge Solutions Bulletproof Si, 6 gal
    Cutting Edge Solutions Bulletproof Si, 6 gal
    Special Price $214.99 Regular Price $321.99
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  • Image of Cutting Edge Solutions Bulletproof Si, 2.5 gal
    Cutting Edge Solutions Bulletproof Si, 2.5 gal
    Special Price $123.90 Regular Price $151.99
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  • Aptus Fasilitor, 1 L
    Aptus Fasilitor, 1 L
    Special Price $314.75 Regular Price $488.03
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  • Image of Cutting Edge Solutions Bulletproof Si, 1 gal
    Cutting Edge Solutions Bulletproof Si, 1 gal
    Special Price $72.98 Regular Price $83.99
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  • Image of Mills Nutrients Vitalize, 500ml
    Mills Nutrients Vitalize, 500ml
    Special Price $124.50 Regular Price $200.00
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  • Image of Botanicare Silica Blast 2.5 Gallon
    Botanicare Silica Blast 2.5 Gallon
    Special Price $74.00 Regular Price $127.26
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  • Dyna-Gro Pro-TeKt Gallon
    Dyna-Gro Pro-TeKt Gallon
    Special Price $47.50 Regular Price $55.00
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  • Image of Botanicare Silica Blast Gallon
    Botanicare Silica Blast Gallon
    Special Price $38.51 Regular Price $57.52
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