Shogun Silicon

Shogun Silicon — Potassium Silicate Plant Fortifier for Hydro & Coco Growing

Best for: Growers running hydro or coco systems who want stronger plants, better pest resistance, and heavier yields without the mixing headaches

Shogun Silicon is a concentrated potassium silicate supplement designed to fortify plant structure and build natural resilience against pests, disease, and stress. Unlike raw potassium silicate, Shogun's formulation is refined for stability and ease of mixing—solving the industry's biggest pain point. At the recommended 1ml/L dosage, it delivers unbeatable value per litre of silicon into your plants.

How it compares

Silicon supplements range widely in concentration and ease of use. Shogun sits at the premium end of the value spectrum.

• Higher silicon concentration than most mainstream brands (Advanced Nutrients, Botanicare, General Hydroponics)
• Designed specifically to stay stable in mixed nutrient solutions—no gooey tank deposits
• Works across all soilless substrates: hydro, aeroponic, and coco
• UK-made, tested against high-end nutrient systems, priced more sensibly

Usage guidance

Getting the mixing right
Potassium silicate is notoriously difficult to work with. Shogun have engineered around this, but the protocol still matters. Add silicon first, adjust pH below 7, then add other nutrients. Never mix silicon and nutrients at pH 7 or above—calcium and magnesium will precipitate and you'll lose the benefit.

Hydro and aeroponic systems
Fill tank to 75% with plain water. Pre-dilute all nutrients separately but hold them back. Add Shogun Silicon at 1ml/L, mix thoroughly, adjust pH to below 7, then slowly add your base nutrients whilst mixing continuously. Use from week one through to week 7 of the bloom phase.

Coco coir
Follow the same protocol as hydro—silicon first, pH below 7, then nutrients. Silicon is essential in coco since the substrate naturally lacks it. Feed little and often for best results.

Foliar spray (all substrates)
Dilute at 5ml/L and keep pH between 5–7. Works on soil too, though soil-grown plants have naturally abundant silicon—foliar application is the safer route if you're using it in soil.

Timing
Can be used from the moment cuttings or seedlings develop roots right through the growing cycle. Silicon is immobile in plants, so consistent feeding throughout matters more than one big dose.

Technical specifications

• Active ingredient: Potassium silicate (highly refined, stable formulation)
• Silicon content: 1.4% (Si)
• Potassium content: 4.6% (K₂O)
• Bioavailable form: Silicic acid (forms when pH is below 7 in solution)
• Dosage rate: 1ml per litre at all growth stages
• Foliar spray rate: 5ml per litre, pH 5–7
• Product pH: 10–11.5 (adjust downward in mixed solution)
• Substrate compatibility: Hydro, aeroponic, coco, and soil

Who this is for

• Hydro and coco growers who want stronger cell walls and heavier yields
• Anyone dealing with pest pressure or mould/mildew in their system
• Growers looking for a UK-made silicon supplement that actually stays stable
• Experienced nutrient users who understand why silicon matters in soilless growing
• Serious hobby growers running multiple crops where plant structure directly affects yield

Our take

Silicon gets overlooked in most nutrient regimes, but the benefits are too wide to ignore—stronger stems, better pest defence, improved photosynthesis, tougher leaves. Shogun have cracked the formulation problem that makes potassium silicate such a nightmare to work with.

If you're running hydro or coco, worth picking up while stock lasts. Feed it little and often, get the mixing protocol right the first time, and your plants will be noticeably tougher and more resilient. Good value for what you're getting.