Grow More® Armor Kote Potassium Silicate 0-0-3 — 2.5 gal (7.5% Soluble Silicon)

Potassium Silicate Supplement, 2.5 gal, for Stronger Stems and Firmer Buds

Hydroponic and soilless media don't naturally contain silicon, leaving plants without one of the most impactful structural elements a grower can add to a nutrient program. Grow More Armor Kote Potassium Silicate 0-0-3 delivers 7.5% soluble silicon in a liquid, plant-available form, depositing in cell walls to strengthen the mechanical integrity of leaves, stems, and developing buds.

Available in 2.5 gal, the result is a plant that stands taller, holds its canopy more effectively under high-intensity lighting, and produces firmer, more well-structured flowers and fruit.

Key Features & Benefits

• 7.5% Soluble Silicon: A high-concentration potassium silicate formula delivers a meaningful dose of plant-available silicon in every application.
• Strengthens Cuticle Membrane: Silicon deposits in the epidermal cell layer and cuticle, improving resistance to fungal pathogens and insect damage.
• Enhances Leaf and Stem Turgidity: Reinforced cell walls increase structural rigidity, reducing stem lodging under heavy bud loads.
• Promotes More Erect Leaves: Structurally reinforced leaves maintain a more upright orientation, maximizing light interception across the canopy.
• Firmer Bud Development: Silicon availability during bud development promotes firmer, more structurally cohesive flowers.

Who Should Use This

Hydroponic and soilless growers who want to maximize structural plant integrity, improve canopy architecture under high-intensity lighting, and enhance resistance to pathogens and physical stress are the direct fit, particularly in high-density indoor production where stem strength and bud firmness impact harvest quality.

About Grow More Inc.

Grow More Inc., in business since 1918 as National Chemical Company in Hollywood, California and now headquartered in Gardena, California, builds Armor Kote as its dedicated silicon supplement for hydroponic and soilless growing.

Frequently Asked Questions

Why is silicon important for plants even though it isn't a recognized essential nutrient?

Silicon is classified as a beneficial element because plants can complete their life cycle without it, but silicon-supplemented plants consistently outperform non-supplemented plants in structural strength, pathogen resistance, and stress management, especially in hydroponic systems where it's naturally absent. Adding it back through a supplement like Armor Kote effectively restores a benefit that soil-grown plants get naturally from mineral soil.

Why must potassium silicate be added to the reservoir before other nutrients?

Potassium silicate is highly alkaline and can react with concentrated calcium and phosphorus-containing solutions to form insoluble precipitates. Adding it first and mixing thoroughly before introducing other nutrients keeps the silicon soluble and plant-available.

How does silicon strengthen the cuticle membrane against pathogens?

Silicon deposits in the epidermal cells and cuticle create a physical barrier of silicified cell walls that fungal pathogens must penetrate, slowing or preventing infection while also triggering the plant's systemic defense responses. Stronger cell walls also help stems and branches resist lodging under heavy flower or fruit loads.

Can Armor Kote be used as a foliar spray?

Due to its high alkalinity, it isn't recommended for direct foliar application without significant dilution and pH adjustment. Root-zone application via reservoir or irrigation is the preferred and most effective delivery method.