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USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
For Your Every Summer RSVP, with Code: SUMMER15
Description
Grotek Pro-Silicate (0-0-4) 4 LiterWith a high concentration of soluble potash and silica, Pro Silicate was developed for use in soilless media and hydroponic systems where these elements may be lacking. While not considered an essential nutrient, plants accumulate silica in macro proportions for good reason. Silica is known to strengthen cell walls and overall cell integrity, which makes plants more resistant to abiotic stress such as heat and drought.

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
4.5 ★★★★★
Based on 1377 reviews
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Product Reviews
★★★★★ 4
sleeves long
I'm 5'6" and stocky but the sleeves are too long and slip over to rest half way down my hand. If your 5'9 or taller you will be fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
★★★★★ 5
Quarter zip
Great quarter zip, high quality, very nice material and comfortable. Buying 5 more colors
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
★★★★★ 5
Great fit
Color: Cream, Size: X-Large
Great fit and feel- my son loved it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
★★★★★ 5
High quality
Wow what a pullover. If I could give 10 stars I would go off of your chest size. Perfect fit and super high quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
★★★★★ 5
LOVE IT
Color: Light Blue, Size: X-Large
LOVE IT!!!! Coming for more!!!!
Perfect fit, perfect size, i simply love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
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