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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
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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
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
It works!
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
There is a strong smell or roasted coffee beans but since I started using this product my edges are healthier and the hair at the middle of my head that has been struggling to grow is gaining some length. The product itself can get hard depending on the temperature of your room but if you use it as directed the texture isnt so bad. The oil is thick and not very greasy or difficult to wash away. Definitely effective. 100% will recommend.
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Reviewed in the United States on December 16, 2025
★★★★★ 5
It's Working
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
I like how it softens and protect hair. I am using sparingly on my scalp and have not used enough to see hair growth yet. I have had it for a month but do not use daily. I am growing my grey hair out and I have noticed that some of the white hairs are more salt and pepper now so it naturally darkens hair. My friend who told me about the product has been using it longer and her grey hairs are pretty much unnoticed by the natural darkening effect, blending enough to give her a light brown look. I have extremely fine thin fragile hair so I leave it on instead of rinsing or washing it out per instructions, that is another reason I do not use daily on hair and scalp. So far I have not had any negative side effects by using sparingly and leaving in until weekly wash. There is a strong smokey smell but not overwhelming for me and the scent dicipates within an hour or less.so I am not bothered by it. After using product on my hair, I rub a little on my nails & cuticles. It appears to help, as my cuticles are a lot healthier now.
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Reviewed in the United States on February 1, 2024
★★★★★ 4
Ash vs. Moisture/Success?
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
The product feels great on the skin and moisturizes well. Although, don't be fooled by the smokey coffee detail. I'm an avid expresso bean grinder and drinker, this is no coffee. Smells like strong chain smokers favorite corner of the house on a stressful day. Imagine ash trays and Jojoba blended. Now that that's explained, it genuinely feels great on the skin/beard/scalp. Unfortunately, I am unsure how long my wife will tolerate this as a nighttime routine.
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Reviewed in the United States on September 9, 2025
★★★★★ 5
Strong coffee smell. Might not be be compatible for everyone. However, product is really good.
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
Love this product. May not be compatible for someone who doesn't like smell of coffee that does not detract from the product. it's really good for hair.
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Reviewed in the United States on January 5, 2026
★★★★★ 3
So far nothing amazing
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
So I’ve been using for a couple of weeks now and I haven’t noticed any difference. I am going to continue on. I don’t know if it takes time for it to actually show some results. I will say two things about it. It comes solid for 12 my jar cracked and broken And it’s non-returnable so I just have to deal with it so that’s unfortunate after paying $20 second of all it is a solid mass so you have to put it in your hands and kind of warm it up for it to become any sort of an oil and I wouldn’t even consider it an oil at that it’s more of like a cream once you warm it up in your hands, but it doesn’t make your hair greasy. I use a small amount I would think that the jar would last a long time given that you don’t need a lot to get through to your scalp unfortunately, with my jar being cracked, I don’t know how that’s gonna affect the longevity of the product And it does have a smell think of burnt coffee beans that will dissipate after about an hour to an hour and a half after putting it on, but if you’re not putting it on, I’m just going to bed. It might be become an issue. I’m gonna wait it out. I hope I do see results from doing this but again so far nothing.
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Reviewed in the United States on February 15, 2025
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