Grow Genius Mono Silicic Acid Silicon Supplement
Grow Genius Mono Silicic Acid Silicon Supplement
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Order by 3pm Mon–Thu for next-working-day delivery · FREE delivery over £50 · Free Wembley pickup
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Bioavailable Silicon That Builds Genuinely Stronger Plants
Grow Genius Mono Silicic Acid delivers silicon in the one form plants can actually absorb immediately. Most silicon products are potassium silicate, which must be converted before the plant can use it and pushes pH sharply upward. This is mono silicic acid — already plant-available, effective at an extremely low dose, and proven to increase root mass, leaf size and brix content.
Key Benefits
- Immediately bioavailable — no conversion step, unlike potassium silicate
- Strengthens cell walls for thicker stems that carry heavy flowers without support
- Builds natural resistance to pathogens, pests and heat fluctuation
- Increases root mass and leaf area, raising overall photosynthetic capacity
- Very high dilution ratio — running costs per litre of feed stay tiny
- Compatible with any nutrient range and with soil, coco and hydro
- Made in the UK and biodegradable
Floppy Stems and Plants That Buckle Under Their Own Weight
Plants that need staking through late bloom are usually short on silicon. Without it, cell walls stay thin, stems stay soft, and the plant is more vulnerable to heat stress, powdery mildew and pest pressure. Silicon is deposited structurally into the cell wall, so the strengthening is physical and permanent rather than a temporary boost.
How to Use
- Standard feed: 0.03–0.05 ml per litre of nutrient solution — measure carefully, this is a very concentrated product
- Add to water before any other nutrient or additive, and stir
- Use at every feed from early veg through to mid-flower
- Foliar: 0.05 ml per litre, lights off, avoiding open flowers
- Check pH after mixing — unlike potassium silicate this has minimal pH impact
- Never add undiluted to a reservoir containing concentrated nutrients
Technical Specifications
- Active: mono silicic acid (immediately plant-available)
- Dose: 0.03–0.05 ml per litre
- Suitable for: soil, coco, hydroponics
- Stage: early veg through mid-flower
- pH impact: minimal, unlike potassium silicate
- Origin: made in the UK · biodegradable

Free next-day delivery on orders over £50 (order by 3pm Mon–Thu). Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.