

🌿 Grow stronger, last longer, harvest better — the pro’s secret weapon!
GH Armor Si is a concentrated, organic liquid supplement designed to significantly strengthen plant stems by enhancing node knuckle development. Trusted by growers for over 8 years, this product ensures plants can support heavier flowers, improving overall yield quality. Its sparing use means one quart lasts multiple grow cycles, making it a cost-effective addition to any professional or serious home grower’s toolkit.
| ASIN | B0792S9RKZ |
| Best Sellers Rank | #24,871 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #826 in Garden Fertilizers |
| Brand | General Hydroponics |
| Customer Reviews | 4.8 4.8 out of 5 stars (255) |
| Global Trade Identification Number | 00793094017824 |
| Item Form | Liquid |
| Item Weight | 2.4 pounds |
| Item model number | 12/CS |
| Liquid Volume | 1 Quarts |
| Manufacturer | B0792S9RKZ |
| Product Dimensions | 3.2 x 3.2 x 8.9 inches |
| Special Feature | organic |
| Target Species | Insects |
| UPC | 793094017824 |
A**Y
You need this your maximizing your yields
This stuff does wonders for your plants. I'm sure you could go a whole grow cycle without it however it makes such a big difference in the overall strength in the stem since it helps produce this giant kuncles on the stem of the nodes. I'm not done with my grow yet but I have no doubt that the plant will be able to support all of its flowers. Furthermore, you can use this stuff pretty sparingly so it's gonna last you FOREVER. Overall, I think it's worth the investment.
T**G
Worth every penny
For those of you on the fence whether or not the armor size is worth it first-hand experience a little over 8 years of using this after not using it prior to that you see a tremendous difference a small amount goes a long long way at the end of the day it provides a better quality product for top shelf flower
B**T
My Favorite Silica
A lot of silica additives are the same as their purpose is to help increase the strength of the stalk’s cell walls. I’ve tried several brands and keep going back to this one. Something tells me it just blends with my recipe better than many other brands, possibly the additional potassium but it seems to be more compatible than Advanced Nutrients Rhino Skin (which I really, really like and still use when I can’t get this) and Botanicare Silica Blast (just below Rhino Skin imo and is my third string silica). After many runs of each brand and a couple not named, I’ve pretty much settled on Armor Si.
J**K
Must have
This is a must have
M**S
This stuff is really good!
I’ve been using the General Hydroponics Armor Si for a few weeks now, and I am genuinely impressed with the results! This water-based nutrient solution is easy to mix and apply, and I’ve already noticed a noticeable improvement in my plants' health and growth.
J**N
Good nutes
Working for my plants so far
M**T
Strong stems and sun protection
I have been using this since 2018 and have tried other silica products but prefer this one due to its slightly higher alkalinity. I use it for fruit/vegetables/houseplants in soil, leca, kratky, and DWC methods I have noticed that my monsteras, spider and Pothos plants love this stuff, but my Ficus Elastica especially has been growing off the charts since I added this. My main fertilizer is Foliage Pro, but when I add the required 5 ml of fertilizer to a gallon of reverse osmosis water it drops the ph to somewhere between 4 - 4.5 and I have to use quite a bit of PH Up to adjust it into the correct range. Through a bit of testing I have found that adding just 2ml of armor si before the fertilizer there is no need for any further ph adjustment. If you find yourself already using PH up as your main adjustment method, use this instead, plus you get the benefits of the silica. At the rate I am using it (2ml/gal) this bottle can make roughly 470 gallons so it lasts a while. One huge benefit I have noticed is sun protection. I can take a plant that has been growing indoors and stick it outside in full sun without any burning of the leaves. My peppers and tomatoes go right outside without going through the hardening off process.
T**3
It just works
Works great. Helped plant reach over 5’ tall and 4’ wide. Had a great crop. Great directions but I used only half the dosage for my particular grow
E**N
Works wonders
Trustpilot
4 days ago
2 months ago