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- USA
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Ships within 48 hours · Estimated delivery Jun 15 - Jun 20
For Your Every Summer RSVP, with Code: SUMMER15
Description
General Hydroponics® Armor Si™ GallonGeneral Hydroponics Armor Si 0 0 4 Armor Si is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, Coco Coir and all types of media. Use as a growth enhancer with irrigation water or in addition to your regular fertilizers. Armor Si improves plant structure and foliar development, increases yield and improves flower and fruit production. Your plants will additionally experience improved heat

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
4.7 ★★★★★
Based on 1243 reviews
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Product Reviews
★★★★★ 5
My first choice for Spray SPF 100 rated products.
Size: 6 Ounce (Pack of 1), Style: Spray
I really like this spray on SPF 100 product over other brands I have used. There is really no issues with application and no detectable odor or fragrance after it drys. I really can't find anything negative to note about this stuff & it seems to work well. For someone who needs the very best sunblock to use every day, this wins my First Place Award over all the other products I have used.
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Reviewed in the United States on September 20, 2025
★★★★★ 5
Great kid stuff
Size: 6 Ounce (Pack of 1), Style: Spray
This stuff is great and works well for kids and adults alike. Used at the zoo this past week and on my young kid almost every day. Yes, really, but does really well. I have not had any burns or irritation with this product. Spray, rub and go. Easy to carry and a lot of product in each can.
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Reviewed in the United States on June 14, 2025
★★★★★ 5
Works great feels great
Size: 6 Ounce (Pack of 1), Style: Spray
Definitely worth the money I still bought 2 of these bottles, but I found it locally cheaper in stores so I would check them out first but I do still highly recommend because of how good it works!
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Best sunscreen for kids
This is the only sunscreen my son can use. He has very sensitive skin, and can’t use a lot of other sunscreens. This covers great and is a little thicker so you know it’s staying on.
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Reviewed in the United States on July 19, 2025
★★★★★ 5
Great product
Goes on clear and smooth!
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Reviewed in the United States on April 14, 2026
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