Description
xTurn-key CO2 for Planted Aquariums
Meet the FZONE 2.5L Upgraded Aquarium CO2 System, a compact, cylinder-free solution designed for steady, controllable CO2 delivery in planted tanks. The system uses a safe citric acid and sodium bicarbonate reaction to generate CO2, producing high-purity gas and maintaining consistent pressure and flow through a precise regulator, a bubble counter, and a diffuser. Because it doesn’t rely on refillable cylinders, you may experience fewer interruptions and more predictable gas supply during growth phases.
Built for safety and rugged reliability
Constructed with a food-grade 304 stainless steel body and a thicker wall, the unit is designed to withstand regular operation. The manual shut-off valve gives you direct control when CO2 isn’t needed, while an automatic pressure-relief valve vents excess pressure to guard against overpressure scenarios, offering dual safety protection for worry-free use.
Precise control and clear monitoring
Fine-tune the CO2 flow with a precision needle valve, and monitor delivery with a bubble counter and a real-time pressure gauge. The upgraded all-in-one solenoid reduces connections and potential leakage, helping to keep CO2 delivery stable and consistent for a thriving planted aquarium.
Ready to install and use
This complete kit is designed for straightforward setup. It includes a diffuser, check valve, U-connector, suction cups, tubing, a funnel, a syringe, sealing rings, and a power adapter—everything you need except the CO2 materials. Simply add your chosen raw CO2 materials and you’re ready to go.
Easier use and maintenance
For easier cleaning, the DIY reactor features an upgraded external thread design that minimizes residue buildup. The bottle opens smoothly, and a built-in fill port lets you add water directly with a syringe—no need to unscrew the cap, saving time during refills and maintenance.
Real-world benefits you may notice
Users often report steadier gas delivery during growth spurts, fewer interruptions from refills, and smoother integration with filtration systems. Individual results vary, but the system’s design emphasizes reliability, ease, and simple ongoing operation.
- Included components: CO2 diffuser, check valve, U-connector, suction cups, tubing, funnel, syringe, sealing rings, and power adapter
- Key usability features: no extra parts required; just add CO2 materials; integrated safety and streamlined wiring
FAQ
Q: What makes the FZONE 2.5L CO2 system different from traditional cylinder setups?
A: It generates CO2 via a citric acid and baking-soda reaction with integrated safety features.
Q: What’s included in the kit and what else do I need to start?
A: Includes diffuser, check valve, U-connector, tubing, and more; raw CO2 materials are not included.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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