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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

7 Items

  • 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 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
    Save with Commercial Account: $00.00
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