If desired the BioStyle Filters can be optimised to suit different aquarium needs through the use of different filter media booster cartridges. These cartridges fit easily into the BioStyle Filter, in place of the biological filter foam. The quantity of cartridges the filter chamber can hold depends on the size of the BioStyle Filter.

Key feature:

• Designed for use with the Oase BioStyle Hang On Filter rangeHigh quality activated carbon cartridge
• Helps remove cloudy water, harmful metals, odours and tannins
• Large surface area available for absorption
• Replace every 3-4 weeks

The BioStyle Carbon Booster Cartridge contains high quality activated carbon ideal for aiding in the removal of cloudy water, harmful metals, odours and tannins resulting in clean and clear aquarium water. When processed activated carbon features small, low-volume pores designed to increase the surface area available for absorption of unwanted substances. We recommend that carbon only be used when needed and replaced after 3 to 4 weeks, dependant upon aquarium size, fish and plant density and any noticeable decline in filter performance.

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.