SKU: 35665918128

GT Silica

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Description

GT SilicaGT Silica Strengthen Plant Cell Walls for Healthier Growth GT Silica is a concentrated potassium silicate additive designed to supply plants with bioavailable silica a mineral not naturally present in most hydroponic solutions. Regular use helps fortify plant cell walls, making them more resilient against pests, diseases, environmental stress, and physical damage. Why Use GT Silica? Strengthens cell walls for improved structural integrity. Boosts

GT Silica – Strengthen Plant Cell Walls for Healthier Growth

GT Silica is a concentrated potassium silicate additive designed to supply plants with bioavailable silica – a mineral not naturally present in most hydroponic solutions. Regular use helps fortify plant cell walls, making them more resilient against pests, diseases, environmental stress, and physical damage.

Why Use GT Silica?

  • Strengthens cell walls for improved structural integrity.
  • Boosts resistance to fungal infections, insect attacks, and environmental stress.
  • Increases chlorophyll production for more efficient photosynthesis and CO2 uptake.
  • Helps maintain leaf variegation and reduces the risk of brown spotting.
  • Suitable for all growth stages – vegetative through to maturity.

Directions for Use

Hydroponics / Semi-Hydro: Add 5ml per litre of plain water, stir thoroughly, and let sit for 15 minutes before adding nutrients. Adjust pH to 5.5–6.5 after mixing.

Soil / Potting Mix: Add 2–3ml per litre of plain water, stir thoroughly, and let sit for 15 minutes before watering plants.

Tip: Always mix GT Silica into water before adding other nutrients to avoid precipitation and ensure even distribution. Handle with care – wear gloves and eye protection when using the concentrate.

Guaranteed Analysis

  • Potassium (K): 0.58% w/v
  • Silica (Si): 1.07% w/v

Comparison with Other Growth Technology Products

Product Purpose Best For
Foliage Focus Complete nutrient solution for leafy growth General plant health, foliage plants
Complete Focus Balanced nutrient solution for all plant stages All-round feeding, mixed plant collections
GT Silica Silica additive to strengthen cell walls and improve stress resistance Boosting plant structure and resilience alongside a base nutrient
GT Rootzone Root biostimulant to promote strong root systems and plant vitality Encouraging healthy root growth and improving nutrient uptake

 

Please note: This product is not eligible for return, as liquid items supplied in non-sealable containers cannot be resold due to contamination risks.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 35665918128

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Isabel
Boise, US
★★★★★ 5
Great quality
Size: 6 Ounce (Pack of 1)
Thinksport SPF 50+ Mineral Sunscreen with Zinc is a reliable, high‑protection option that feels lightweight and non‑greasy on the skin. It applies smoothly without leaving too much white cast for everyday use, and I love that it’s mineral‑based with zinc for strong UVA/UVB defense. Great for active days outdoors. Highly recommend for sensitive skin and safe sun coverage!
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Reviewed in the United States on March 24, 2026
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Verified Purchase
K
Houston, US
★★★★★ 5
Brown skin approved!
Size: 6 Ounce (Pack of 1), Size: 6 Ounce (Pack of 1)
Does not leave a white cast, feels very light on the skin. Scanned on Yuka and was a 86/100 green zone! It’s so hard to find a sunscreen that isn’t trying to poison you, scanned all the sunscreen at Walmart and were rated a 1/100 through 6/100. Which brought me to Amazon. Thinksport has my vote on goodness and healthiness, would buy again!
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Reviewed in the United States on May 29, 2026
M
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MK
Grantham, US
★★★★★ 5
My favorite... And I'm picky.
Size: 3 Ounce (Pack of 1)
I've become a little obsessed with sunscreen over the last past 5 years. I have olive skin and developed melasma after my first pregnancy. I learned the hard way that chemical sunscreens don't help if you have melasma - and they actually make the dark spots even worse. Also the active ingredients in chemical sunscreens (like Oxybenzone and Octinoxate) are absorbed by your skin, and may cause allergies, hormonal imbalance and be toxic overtime. After learning that, I started wearing only mineral sunscreen (active ingredient is zinc and/or titanium dioxide). These are not absorbed and works by creating a physical barrier that reflects the sun (some studies suggest that some nanoparticles of zinc may be absorbed by your skin, so to be really, really safe you should look for non-nano particles). After trying a few brands, I realized the sunscreens with only zinc in their formulas worked better than the blends with titanium dioxide, but this is just my personal preference I guess. And the higher the percentage of zinc, the better. Most pure mineral sunscreens out there are 10-ish % zinc, SPF 30, 40 min water resistant - which is ok. Thinksport goes beyond that: It's 20% non-nano zinc, SPF 50+, 80 min water resistant. It really can't get any better than that! The lotion is not extremely thick when compared to other sunscreens I've tried and I find it pretty easy to apply. As every zinc sunscreen, it does leave a little fine white cast, but honestly Thinksport is not bad at all! It smells nice, lightly citrusy - and the smell vanishes soon. And, it's not overpriced. Best I've tried so far.
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Reviewed in the United States on April 15, 2016
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BB
Birmingham, US
★★★★★ 3
Works but will Dry Out Your Skin
Size: 6 Ounce (Pack of 1)
I am a swim instructor at an outdoor pool and this stuff DOES work. I can apply it at the beginning of a 5 hour shift and while I have experienced light tanning it has protected against burning completely without reapplication. The white cast is significant though I don't mind it aesthetically, I know its there for protection . It does rub off on things though so consider yourself warned. Major Con: it is incredibly drying, and the soap needed to scrub it off is A LOT. That coupled with chlorine is a lot for my skin . Still on my sunscreen journey.
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Reviewed in the United States on May 4, 2026
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Colleen S
Draper, US
★★★★★ 5
This book was amazing!
Format: Kindle
I absolutely loved this book! Avery and Knox were beyond perfect for each other. Rebecca Jenshak did such an incredible writing this book and these characters. The brothers relationships in this family is wonderful. Everyone steps up to help take care of each other and it is heart warming. This book had low angst which I loved! I am really enjoying the start to this series and I cant wait to read the next book! The duet audiobook was incredible! Erin Mallon and Teddy Hamiliton did a fantastic job bringing this book and these characters to life! I highly recommend this book, audiobook, and series!
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Reviewed in the United States on April 22, 2026

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