• Efficiently removes nitrate from your aquarium
• Proprietary technology specifically designed to stimulate growth oF anaerobic bacteria.
• Anaerobic bacteria completes the nitrification cycle which breaks down nitrate into nitrogen gas, exporting nutrient From the aquarium.
• 2 Blocks Treats up to 1,000L / 264 Gal.

Completes the nitrogen cycle through denitrification, by culturing anaerobic heterotrophic bacteria (including species of the genera Paracoccus denitrificans and various pseudomonads), reducing nitrate into nitrogen gas.
Use directly in sump, stack up two Anaerobic-Blocks horizontally, and place a Denitrification Catalyst in between the blocks, as illustrated above. The Denitrification Catalyst will be slowly used up and should be replaced every 2 months
The Nano-Ceramic beads in the Anaerobic-Blocks are specially treated with our proprietary technology, such that they excel at establishing anaerobic heterotrophic bacteria which strives in anoxic environment.
The Anaerobic-Block are carefully manufactured to ensure its quality, the well-designed porous structure of the Anaerobic-Block create the ideal living conditions and environment for bacterial colonies, but will not be decomposed by the bacterial colonies that grows within it.
Denitrification is becoming more commonly used to remove nitrogen from sewage, municipal, industrial, and agricultural wastewater to counteract the pollution. Various types of denitrification reactors and methods are now used and are effective in removing nitrate from agricultural run off and even manure. The Anaerobic-Blocks integrated this technology in a compact package that'll fit perfectly in your sump.

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.