General Hydroponics Armor Si Nutrients

While silicon isn't classified as essential, it's considered a beneficial element that dramatically improves plant performance. Silicon deposits in cell walls strengthen structural integrity, activate defense mechanisms against pests and diseases, and improve stress tolerance. Plants can survive without supplemental silicon, but they perform significantly better with it—particularly in controlled environments where natural silicon sources are limited.

Plants absorb soluble silicon and deposit it in cell walls, particularly in stems and leaves. This silicon accumulation creates a silica-cellulose framework that's more rigid than cellulose alone, resulting in thicker stems, stronger branches, and more upright foliage. The structural enhancement allows plants to support heavier flower and fruit loads without bending or breaking, directly increasing yield potential in high-production crops.

Start Armor Si early—with seedlings or young vegetative plants—and continue throughout the lifecycle. Silicon needs to be incorporated into plant tissues as they develop for maximum structural benefit. Starting late means new growth gets silicon while older tissues remain weaker. For best results, use Armor Si from the beginning and maintain consistent application through vegetative growth and into flowering.

Yes, Armor Si works alongside any base nutrient program, including the General Hydroponics FloraNova Grow Nutrients series. The 0-0-4 NPK provides minimal potassium that won't significantly alter your overall nutrient ratios. However, potassium silicate is alkaline and will raise pH, so always add Armor Si to your reservoir first before other nutrients, then adjust pH after all nutrients are mixed. This prevents precipitation reactions between the silicate and other fertilizer components.

Silicon creates physical barriers in plant tissues that make it harder for pests to penetrate and pathogens to establish infections. The silica deposits in cell walls act like microscopic armor, deterring soft-bodied insects and fungal hyphae. Additionally, silicon activates plant defense response pathways, priming the immune system to respond faster and stronger when attacked. It's not a pesticide replacement, but it significantly reduces pest and disease pressure.

Potassium silicate is highly alkaline (high pH) and can react with phosphorus, calcium, and magnesium in concentrated form, creating insoluble precipitates that clog systems and become unavailable to plants. Adding Armor Si first allows it to dilute in water before introducing other nutrients, preventing these reactions. Always follow the mixing order: water, then Armor Si, then base nutrients, then supplements like General Hydroponics CALiMAGic Nutrients, and finally adjust pH.

Typical application rates are 1-2 ml per gallon of nutrient solution for vegetative growth, potentially increasing to 2-3 ml per gallon during heavy flowering when structural support is critical and plants are receiving General Hydroponics Liquid KoolBloom Nutrients for enhanced ripening. Start at lower rates and increase based on plant response and pH management. Monitor pH closely since Armor Si will raise it significantly—you may need to use more General Hydroponics Liquid pH Down Nutrients than usual to stabilize your solution.

Armor Si works in all growing media including soil, coco, and hydroponics. Soil naturally contains silicon, but it's often in forms plants can't readily absorb. Armor Si provides soluble silicon that's immediately available regardless of growing medium. In hydroponics and coco (which have no natural silicon), supplementation is especially important. In soil, it ensures plants have access to optimal silicon levels even if native silicon availability is poor.