General Hydroponics Armor Si

General Hydroponics Armor Si is a premium potassium silicate supplement formulated to strengthen plants, improve structural growth, and increase resistance to environmental stress throughout every stage of development. Suitable for hydroponics, coco coir, soil, and soilless media, Armor Si delivers highly available silica and potassium to support healthier, stronger, and more productive plants.

Silica plays a vital role in reinforcing cell walls, helping plants develop thicker stems, stronger branches, and improved overall structure. This added strength allows plants to better support heavy flowers and fruit while improving light interception throughout the canopy.

Armor Si also helps plants tolerate environmental stresses including heat, cold, drought, and transplant shock. By improving plant resilience and nutrient transport, it promotes healthier foliage, stronger root development, improved growth rates, and higher yields.

The concentrated liquid formula mixes easily into nutrient reservoirs and is compatible with virtually any feeding program. When used with FloraSeries, General Hydroponics recommends adding Armor Si to fresh water first, followed by CALiMAGic (if used), then FloraMicro before adding the remaining nutrients.

Whether growing vegetables, herbs, flowers, fruiting plants, or ornamentals, Armor Si provides an excellent source of supplemental silica for stronger, healthier plants from propagation through harvest.

Premium Silica Supplement

Armor Si supplies highly available potassium silicate to strengthen plant tissues and improve overall structural development.

Silica helps reinforce cell walls, producing thicker stems and stronger branches.

Improves Plant Strength

Regular supplementation supports improved plant stature, stronger foliage, and increased stem rigidity.

Stronger plants are better able to support heavy flowers and fruit.

Increases Stress Resistance

Armor Si helps plants tolerate environmental stresses including:

• Heat
• Cold
• Drought
• General environmental stress

Supports Better Light Absorption

Improved plant structure allows leaves to intercept light more efficiently, supporting healthier growth and greater productivity.

Promotes Higher Yields

Silica and potassium work together to encourage vigorous growth, improved flowering, increased fruit production, and overall crop performance.

Suitable for All Growth Stages

Armor Si may be used throughout:

• Propagation
• Vegetative Growth
• Flowering
• Fruiting

Fully Compatible with Most Feeding Programs

Armor Si integrates easily into hydroponic and traditional feeding schedules.

For FloraSeries users, always add Armor Si to fresh water before all other nutrients.

Works in Multiple Growing Media

Suitable for:

• Hydroponics
• Coco Coir
• Soil
• Potting Mix
• Peat-Based Mixes
• Rockwool
• Soilless Media

Easy to Mix

Simply add Armor Si to fresh water first, stir thoroughly, then add remaining nutrients before adjusting pH.

Directions for Use

• Shake well before use.
• Always add Armor Si to fresh water first.
• Stir thoroughly before adding any other nutrients.
• Add CALiMAGic next (if using), followed by FloraMicro and remaining nutrients.
• Adjust nutrient solution pH to 5.5–6.5 after mixing.

Recommended application rates:

• Mild Strength: ¼ teaspoon per gallon (0.25 mL/L)
• Full Strength: ½ teaspoon per gallon (0.5 mL/L)
• Maximum Strength: 1 teaspoon per gallon (1 mL/L)
• Foliar Spray: ¼–½ teaspoon per gallon

Guaranteed Analysis

NPK: 0-0-4

• Soluble Potash (K₂O): 4%

Non-Plant Food Ingredient:

• Silicon Dioxide (SiO₂): 10%

Derived from:

• Potassium Silicate

What's Included

• General Hydroponics Armor Si
• Factory-Sealed Container