General Hydroponics Armor Si bottle showing 0-0-4 NPK ratio, plant and strawberry illustration on a 1-quart bottle.

GH Armor Si Quart

$14.36
$14.36 $19.95
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General Hydroponics Armor Si bottle showing 0-0-4 NPK ratio, plant and strawberry illustration on a 1-quart bottle.
  • General Hydroponics Armor Si bottle showing 0-0-4 NPK ratio, plant and strawberry illustration on a 1-quart bottle.
  • One-gallon white plastic jug of Armor Si liquid supplement with a blue label featuring plants and a 0-0-4 NPK ratio.
  • White 6-gallon plastic jug of General Hydroponics Armor Si nutrient solution with a green cap and floral label.
  • General Hydroponics Armor Si bottle showing 0-0-4 NPK ratio, plant and strawberry illustration on a 1-quart bottle.
  • One-gallon white plastic jug of Armor Si liquid supplement with a blue label featuring plants and a 0-0-4 NPK ratio.
  • White 6-gallon plastic jug of General Hydroponics Armor Si nutrient solution with a green cap and floral label.
GH Armor Si Quart

GH Armor Si Quart

$14.36
$14.36 $19.95

General Hydroponics Armor Si (0-0-4) is an all-purpose silica supplement that helps plants achieve strong stem and branch structure and foliar development. A healthy, vigorous plant boosts stress tolerance, light absorption, and flower production.


Think of Armor Si as a supplement that supports the foundation of the plant, from leaves to stems to flowers. Armor Si, works with Rockwool, potting mix, coco coir, peat mix, and hydroponics.

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