Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
Seachem Onyx Sand Freshwater Substrate - 7.7lbOnyx Sand is a porous clay gravel for the natural planted aquarium. Being carbonate rich, Onyx Sand provides an advantage to any plants able to utilize bicarbonates. Onyx Sand is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary. Onyx Sand is not chemically coated or treated and will not alter the pH of the water. Although pre washed, it may be
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.1 ★★★★★
Based on 295 reviews
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Product Reviews
★★★★★ 4
Shirt
Color: Navy Blue, Size: Large
Good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Great looking shirt
Color: Royal Blue, Size: XX-Large
My husband looked great in this shirt. It did not wrinkle easily
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Great Fit
Color: Royal Blue, Size: XX-Large
True to size
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Really Nice
Color: Gold Yellow, Size: XX-Large
Loved this shirt
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Dressy casual
Color: Gold Yellow, Size: Large
I really love this shirt. So many compliments have been coming to me because of it
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Reviewed in the United States on April 28, 2026
