The special construction is designed as multilayer filtering which provides the largest surface area with no clogging, making it the best choice for raising discus, angelfish and other small species.

The air effusion chamber produces minute bubbles, increasing the oxygen solubility in the water while not creating any clogging or noise.

The density and diameter of the filter fibres have been rigorously tested in order to maximise the bio-filtration, cultivating the highest density of nitrifying bacteria and making it easy to clean.

These sponges are perfect for Discus breeding tanks, small tropical fish tanks and fry stock tanks.

To use:

• Before use, soak the bio-foam in aquarium water for 5 mins.
• During maintenance, always rinse the bio-foam with drained out aquarium water only. No tap water or hot water should be used at all.

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.