Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 19 - Jun 24
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Description
Seachem Laboratories Matrix Biological Media 1ea/4 LMatrix High capacity biofiltration Controls ammonia, nitrite, and nitrate Highly porous enormous surface area (>~700 m2 L) Supports aerobic and anaerobic bacteria species Matrix is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrix is a porous inorganic solid about 10 mm in diameter. Each liter of Matrix provides as much surface (>~700 m2) as 170 liters of plastic balls! Plastic bio materials
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- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 961 reviews
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Product Reviews
★★★★★ 5
Nice mattress Topper Pad
Size: Queen
Met my expectations and was just as advertised. Good fit; comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
Incredible
Size: Twin
This product exceeded my expectations. The quality is amazing, it works perfectly, and it was definitely worth the price. I’ve been using it for a while now and I’m really satisfied with the results. I would highly recommend it to anyone looking for something reliable and well made.”
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Reviewed in the United States on May 23, 2026
★★★★★ 4
Mattress protector
Size: Twin
Arrived quickly. No factory odor. Was "scrunchy" out of the package, but fit snuggly around the twin mattress and doesn't make any annoying noise. Basic protective mattress topper. Water proof, but breathable, no condensation under the sheets. Disappointed there wasn't more "fluff", but does the job of protecting my mattress from coffee spills and natural body sweat in between weekly washing. I've had it a while, and it seems to be holding up with monthly washing and drying.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Mattress pad
Size: Queen
This mattress pad is comfortable it makes a difference when it on the mattress. It’s makes the bed feel softer instead of hard.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
So far, impressed
Size: California King
Probably not as high a quality as more expensive ones, but fits a California King bed with deep sides perfectly. I am a care-giver for an elderly male and have ordered several because the price is good and I can change them frequently if "accidents" happen. The Mattress Topper Pad does need a large-capacity washer.
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Reviewed in the United States on March 18, 2026
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