The BioCompact internal filter is ideal for nano aquariums from 25 to 50 litres with minimal animal stock and for paludariums. It can be installed vertically as well as horizontally and the water flow rate can be individually adjusted.


All in all, the complete filter, which is immediately ready for operation, ensures effective water filtration in the smallest space. The fine active charcoal foam in the BioCompact 25 ensures effective water filtration. For the BioCompact 50 active charcoal included in the scope of delivery can also be replaced with other filter media, the chamber can be filled as desired.

Oase BioCompact 25:

• Suitable for Aquariums up to 25l
• Max Flow Rate 120 - 240lph
• Suitable for Marine and Freshwater
• Power cable length 1.5m

Oase BioCompact 50:

• Suitable for Aquariums up to 50l
• Max Flow Rate 120 – 240lph
• Suitable for Marine & Freshwater
• Power Cable Length 1.5m

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.