Seachem Matrix

  • From £4.39
  • RRP £7.09
Item in Stock | Usually dispatched within 24 hours
Order within for delivery Friday 28th February with Express Delivery

Why buy from Pond Planet?

14 day returns On all our items
100% Secure Shop in confidence
Excellent Value Amazing prices!
Free delivery on orders over £49*
  • High capacity biofiltration
  • Controls ammonia, nitrite and nitrate
  • Highly porous
  • Suitable for fresh and saltwater aquariums
  • Enormous surface area (>~700 m2/L)
  • Supports aerobic and anaerobic bacteria
  • Available sizes; 250ml, 500ml, 1Ltr, 2Ltr & 4Ltr

Seachem Matrix is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrix is a porous inorganic solid about 10mm in diameter. Each litre of Matrix provides as much surface (>~700 m2) as 170 litres of plastic bio balls. Plastic bio-materials provide only external surface area, whereas Seachem Matrix provides both external and internal macroporous surface area. These macropores are ideally sized for the support of nitrifying and denitrifying bacteria. This allows the media to remove nitrate along with ammonia and nitrite simultaneously and in the same filter.

Matrix is completely inert and will not breakdown. It need not be replaced. Since the majority of the bacteria are internal it can be rinsed when needed without damaging the filter. Seachem Matrix is compatible with all types of wet or wet-dry filters.

Use 250ml of Matrix for each 100L of water. It may be placed in any kind of filter, and is particularly effective in a canister filter. Seachem Matrix is large enough to be used without a filter bag for most applications. Matrix works well in drip tray systems, but you may find that the larger Pond Matrix is better suited for such applications.Use with Stability to more rapidly establish the bio-filter.

Available Sizes:
250ml, 500ml, 1Ltr, 2Ltr & 4Ltr

Showing 2 of our total 3 reviews, with an average rating of 5 stars. Read all 3 reviews for Seachem Matrix.
Write a review ›
Review Summary - 5 out of 5 based on 3 ratings.
July 5, 2019 | Brian Smith

Very good product I was advised to try this to answer a problem I was having in my tank by only using filter media, this solved the problem straight away.

April 9, 2018 | Louise

Fast delivery but can't realy rate it because I havnt used it yet

UK Delivery

Order before 2:00pm for same day dispatch.

Orders under £49

Standard Delivery Service - £3.95
Delivery takes 1-2 working days.

UK Express Delivery - £5.95
Upgrade your order to next working day delivery.

Orders Over £49

UK Express Delivery - FREE!
FREE next working day courier delivery via DPD Local.


Click Here For Full Terms & Conditions


If for any reason you are not satisfied with your purchase from Pond Planet, you may return the product(s) to us within 14 days of the purchase date for a refund or exchange.

Goods must be returned in perfect and unused condition, in their original packaging. The buyer must ensures that the goods are securely and adequately packed to avoid damage and the purchaser pays all postage costs. We recommend that products are returned by recorded delivery or by carrier that requires a signature. Pond Planet accepts no responsibility for goods returned to us unless signed proof can be provided.


Click Here For Full Terms & Conditions


You can use any of the payment types listed at the bottom of the page to pay for your order. Your details are safe with us as we take security very seriously indeed.

We also take fraud very seriously so all credit and debit card transactions are subject to validation, authorisation and security checks by both the card issuer and ourselves.

Please note - We DON'T store your credit card details on line.


We are committed to protecting your privacy. We will only use the information that we collect about you lawfully (in accordance with the Data Protection Act 1998) and inline with our Privacy Policy. 

We collect information about you for two reasons: firstly, to process your order and second, to provide you with the best possible service.

We will not email you in the future unless you have given your consent and will give you the chance to refuse any marketing email from thereafter.


Click Here For Our Full Privacy Policy