Rowa Carbon is a premium-grade activated carbon designed for use in both freshwater and marine aquariums. Produced from high-quality hard coal, it delivers superior filtration performance with extremely low phosphate content, making it ideal for sensitive aquatic environments where water clarity and stability are essential.

Unlike many lower-cost carbons that release phosphate into the water, Rowa Carbon has an exceptionally low Phosphate Output Index (POI) of just 1.3—far below the levels detectable by most hobbyist test kits. This helps prevent algae problems and supports healthier corals, plants, and lime-depositing organisms.

Supplied in pelleted form, it offers a high surface area for effective toxin and contaminant removal, while remaining pH balanced and safe for long-term use.

Key Features:

• Exceptionally low phosphate content – POI of only 1.3
• Removes toxins, yellowing and dissolved organics
• Improves water clarity and light penetration
• pH balanced and highly active for reliable performance
• Pelleted form – easy to handle and use
• Suitable for freshwater and marine aquariums

Trusted by aquarists who want the cleanest possible water without unwanted chemical release, Rowa Carbon is a professional-grade solution for crystal-clear aquarium conditions.

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.