Maxspect Nano-Tech Bio-Block are a new filter media for use in freshwater and marine water aquariums. With an ultra-high surface cross-cutting ratio and filtration area, each Bio-Block has up to 1,080 m² surface area for the establishment of bacterial colonies. With the use of stabilized microbial sewage treatment technology (W-BAF), the Bio-Spheres have a unique advantage in the treatment of water column with high Ammonia-Nitrogen (NH4-N) and high Nitrate-Nitrogen (NO3-N). The Bio-Block excel at establishing bacterial colonies in form of Bio-Nano Composite Films, it allows different species of bacteria and fungi to grow on its large surface area, such as nitrifying bacteria (including species of the genera Nitrosomas, Nitrosococcus, Nitrobacter and Nitrococcus), yeast phototrophic prokaryotes, etc.

• Stabilized microbial sewage treatment technology with Biological Aerated Filter (W-BAF)
• Ultra-high surface cross-cutting ratio and filtration area
• Nano-Tech Bio-Block is made of ceramic beads and is completely inert
• Individual use in filter sump, external filter, internal filter
• Can also simply be placed into the aquarium
• Suitable for fresh and marine water aquariums

Content: 2 filter blocks 10cm x 10cm

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.