Seachem Matrix – 4 L Biofiltration Media
Seachem Matrix – 4 L Biofiltration Media
Description:
Seachem Matrix (4 L) is a premium, high-capacity biofiltration media designed to support optimal water quality in freshwater and saltwater aquariums. Each liter provides over 700 m² of surface area for beneficial bacteria to thrive, effectively removing ammonia, nitrite, and nitrate from your aquarium. Unlike plastic biomedia, Matrix is a natural porous stone that promotes both aerobic and anaerobic bacteria growth, ensuring complete biological filtration. Safe, reusable, and long-lasting — ideal for canister, sump, or hang-on-back filters.
✅ Removes ammonia, nitrite & nitrate
✅ Supports both aerobic & anaerobic bacteria
✅ Suitable for freshwater & marine aquariums
✅ Long-lasting & easy to clean
✅ Trusted by aquarists worldwide
We process and ship over 95% of all orders same day or next business day.
Dry Goods (Fish Food, Medications, Filtration Products, etc.)
Dry goods can be ordered any day and are typically shipped same day ornext business day. Delivery times range from 1–5 business days, depending on the destination and carrier.
Live Plants & Shrimp
Live plants and shrimp are shipped using the most appropriate UPS service and typically arrive within 2 business days.
Shipping Restrictions
We currently do not ship to Puerto Rico, Alaska, Hawaii, or international destinations.
Free Shipping
Orders over $25.00 qualify for free shipping within the lower 48 states of the U.S.
(Frozen Food, tanks and stand is pick up only or get a quote for local delivery option.)
Shipping Options (U.S. Lower 48)
We will select the most cost-effective method for delivery. This may include UPS Ground or FedEx Home delivery.
Transit times are estimates. Only UPS Next Day or 2-Day services are guaranteed.
Order Processing
- Orders placed Monday–Friday usually ship the same or next business day.
- Orders placed Saturday–Sunday typically ship on Monday.
- Packages are picked up Monday–Saturday by carriers.
- All orders ship from our retail store and storage facility in Bardonia, NY.
Seachem Matrix – 4 L Biofiltration Media
Description:
Seachem Matrix (4 L) is a premium, high-capacity biofiltration media designed to support optimal water quality in freshwater and saltwater aquariums. Each liter provides over 700 m² of surface area for beneficial bacteria to thrive, effectively removing ammonia, nitrite, and nitrate from your aquarium. Unlike plastic biomedia, Matrix is a natural porous stone that promotes both aerobic and anaerobic bacteria growth, ensuring complete biological filtration. Safe, reusable, and long-lasting — ideal for canister, sump, or hang-on-back filters.
✅ Removes ammonia, nitrite & nitrate
✅ Supports both aerobic & anaerobic bacteria
✅ Suitable for freshwater & marine aquariums
✅ Long-lasting & easy to clean
✅ Trusted by aquarists worldwide
A Wide Selection of Fish Tanks
At Rockland Aquarium, we offer a full range of aquariums to suit every level of hobbyist — from standard glass tanks and reef-ready systems to compact desktop setups. Whether you’re designing a small display or a stunning aquatic centerpiece, we have the perfect tank for your space and your fish.
With regular promotions and sales, you’ll always find exceptional deals on high-quality aquariums — built for beauty, durability, and long-term performance.
