Silica Supplements
Silica Supplements for Structural Strength
🪵 Toughen up your grow from the inside out.
Why Use Silica?
Silica is a game-changer for plant structure and defense. It reinforces cell walls, leading to stronger stems, improved tolerance to heat and drought, and increased resistance to fungal and pest pressures. A must for growers chasing resilience and yield.
✅ Strengthens plant stems for heavy flower support
✅ Helps resist pests, pathogens & extreme temps
✅ Works in all systems – substrate, coco, hydro
Balancing nutrients too? 💧 Browse Cal Mag options to round out your base fee
Welcome to The Grow Guys
We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.
FAQs
Calculated at checkout by weight and destination. Free shipping over $499*.
Order by 2pm and it ships the same business day from Invermay, Tasmania.
500+ products across 40+ brands, every one filtered through 14 years of real growing experience. Shipping Australia-wide.
30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.
Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.