Seachem Matrix Carbon is a premium spherical activated carbon designed for maximum efficiency in aquarium filtration. Its bead shape prevents packing, allowing optimal water flow and contact with a high density of macroporous binding sites. Matrix Carbon has extremely low ash content, making it pH-neutral, and contains the lowest detectable leachable phosphate of all major carbon brands tested. It removes organic waste, discolouration, and odours more effectively than most high-grade carbons.

Available Sizes:

• Seachem Matrix Carbon 100ml
• Seachem Matrix Carbon 250ml
• Seachem Matrix Carbon 500ml

Key Features:

• Spherical shape for superior water flow and contact
• Low ash content – minimal impact on pH
• Lowest leachable phosphate level on the market
• High adsorption capacity for organics and impurities
• Bituminous coal-based macroporous carbon for water filtration
• Long-lasting performance – treats 400L for several months

Use 250ml to treat up to 400 litres (100 gallons) for several months. Place in a filter bag and rinse before use. Suitable for canister filters, chemical filtration modules, box filters, or high-flow areas in trickle filters.

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.