The Bio-CO2 Pro Refill Pack includes several pre-measured Activator yeast sachets and Booster tablets to quickly and conveniently kickstart the biological fermentation process in Fluval Bio- CO2 Pro systems.

Designed for use will all Fluval Bio- CO2 Pro Low-Pressure CO2 Systems to produce CO2 within a short 24-hour period (when mixed with sugar – sold separately).

Each Refill pack includes: 4 Activator Yeast sachets and 4 Booster tablets.

With high-quality German Champagne yeast with stabilizers and nutrients for consistent quality while being pre-measured for simple and accurate dosing.

Each Refill Pack provides long-lasting CO2 supply: Model 125 (up to 4 months), Model 250 (up to 2 months).

Key Features:

• Contains 4x Activator and 4x Booster
• Designed for the CO² Pro 125 and 250 litre systems
• Quick and easy to refill
• Up to 30 days of CO² production between refills

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.