General Hydroponics Armor Si (0-0-4) is a multi-purpose silica supplement that helps plants achieve strong stem and branch structure and foliar development. A healthy and vigorous plant increases stress tolerance, light absorption and flower production. Think of Armor Si as a supplement that supports the base of the plant, from leaves to stems to flowers. Armor Si, works with rock wool, pot mix, coconut fiber, peat mix, and hydroponics.

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Common questions