Marina i25 replacement Power Cartridge is made specifically to fit inside the Marina i25 internal filter. Its unique design forces the water to enter through the centre of the cartridge.

As unfiltered water enters the two-chamber cartridge, it first passes through the zeolite chamber, which removes toxic ammonia. The water then enters the activated carbon chamber, where pollutants and odours are removed. The water then enters the floss layer, which traps dirt and debris. This unique flow of water results in a crystal clear water. For best results, replace every 4 weeks. This package contains 2 Power Cartridges.

• Provides effective filtration
• Replace every 4 weeks.

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.