Aquario Neo CO2 Refill
$22.50
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Pay in full · save 4%
Pre-order — this line is between batches. Order now and we'll ship when the next batch is ready.Most pre-orders ship sooner — 14 days is the longest you'd wait.
Sold out — check back after the next batch, or use the notify tab for a back-in-stock email.
The bio-cartridge refill for your Aquario Neo CO2 generator — same steady yeast-culture fermentation, ready to swap in the moment the old one's spent.
The Neo CO2 generator brews CO2 (carbon dioxide — the gas plants feed on) from a yeast culture instead of a pressurised bottle. This is the Biorefill cartridge for it: the same stabilised yeast-culture nutrient jelly, in the same format, rated for roughly the same 50–60 days depending on room temperature. You reuse your existing hose, diffuser (the piece that breaks the gas into fine bubbles) and cap — this listing is the cartridge only.
New to Neo CO2? Grab the Aquario Neo CO2 kit first, which includes the generator hardware plus your first cartridge; come back here when it's time to replace it.
- Genuine replacement bio-cartridge for the Aquario Neo CO2 generator
- Same stabilised yeast-culture nutrient jelly, rated approx. 50–60 days
- Reuses your existing hose, diffuser and cap — cartridge only, no hardware included
- Pair with the Aquario Neo CO2 kit if you're starting from scratch
Delivery & returns
Dispatch & delivery
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Check before opening
Opened products cannot be returned for change of mind. Check the item and its compatibility before opening or using it. For unopened change-of-mind requests, see our refund policy.
Use safely
Follow the product instructions, recommended dosage where applicable, and compatibility guidance. Damage caused by misuse is not a product fault.
If something is wrong
Contact us with your order details and a description of the issue. Keep the item and packaging where practical so we can assess it.
These conditions do not exclude or limit your rights under the Australian Consumer Law, including remedies for faulty, damaged or misdescribed goods. A request for prompt contact or photos does not impose a time limit on those rights.
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