FZONE 45g Disposable CO2 Cartridges with 5/8'' Threaded Interfaces – Essentials for Fish

Regular Price
$49.98
Sale Price
$49.98
Regular Price
$64.97
Sold Out
Unit Price
per 
Translation missing: en.products.product.not_in_wishlist

1 order = 1 tree planted (orders $20+)
14-day returns* · *exclusions apply

Secure Checkout

Amazon American Express Apple Pay Diners Club Discover Google Pay Mastercard PayPal Satispay Shop Pay USDC Visa

Details

Give your fish something better with FZONE 45g Disposable CO2 Cartridges with 5/8'' Threaded Interfaces – Essentials for Fish, chosen for its strong customer reviews and everyday usefulness.

Key Features

  • High-Capacity 45g CO2 Output: FZONE 45g CO₂ disposable cartridge provides a larger gas volume than standard 16g/25g cylinders, delivering longer runtime and more stable pressure output. Ideal for applications that require continuous or high-demand CO₂ supply without frequent replacement.
  • Standard Threaded Connection (5/8-18 UNF): Equipped with a 5/8'' 18 UNF threads for a secure, leak-proof connection. This cartridge fits most devices that require a 5/8-inch diameter CO₂ cylinder. Package includes 2 packs.
  • Wide Range of Applications: Suitable for aquarium CO₂ systems, bike tire inflators, inflatable life vests, airbag safety vests, paintball markers, airguns, and other portable gas-powered equipment. Perfect for aquariums, home, outdoor, and hobby use.
  • Disposable & Hassle-Free Design: Pre-filled and ready to use, this single-use CO₂ cartridge eliminates the need for refilling or maintenance. Simply install into a compatible device and replace when empty—clean, safe, and effortless operation for everyday or professional use.
  • Premium High-Strength Steel Construction: Made from durable, corrosion-resistant steel and made from 99.99% pure CO₂ (non-food grade) for stable pressure performance, ensuring safe and reliable CO2 output across different applications.

Order today and keep your fish supplied with trusted aquarium filters. Big Frenchies carries a curated selection of pet supplies so you can shop everything your fish needs in one place.

Shipping & Delivery

How long will it take to ship my order?

Your order will be shipped within 3-8 business days.

How much does it cost?

We offer free trackable shipping on select items.

Shipping rates for partner brand items and international orders may vary and will be calculated at checkout.

Where is my order shipped from?

Big Frenchies apparel is shipped in plastic-free packaging directly from our Virginia facility. Items from our partner brands may have different packaging and can be shipped from any of their fulfillment locations worldwide.

How long does shipping take?

USA: 3-8 business days
CA, AUS, UK, and Europe: 5-21 business days
Rest of world: 5-25 business days

Return Policy

You have 14 days from delivery to request a return or exchange for most products shipped within the United States.* Exclusions apply.

*Exclusions

  • Custom and handmade items are final sale and cannot be returned or exchanged, as they are crafted specifically to order.
  • Returns are only available for US orders. International orders are final sale.
  • For health and safety reasons, personal care items (like baby creams, shampoos, balms, sunscreens, and lotions) and food products cannot be returned once opened.
  • Jewelry and watches are not returnable.

Restocking fee: a 10% restocking fee is deducted from your refund on change-of-mind returns. There is no fee if the item is defective, damaged, or not what you ordered.

As a small family-owned business, we thrive on your feedback, so it's vitally important for us to make sure you're happy with your purchase. Customers are responsible for return shipping costs unless the return is due to a defective product. Learn more about our full return policy.

You can reach out to our customer support team by submitting your request via the "Contact Us" form or by emailing us at support@bigfrenchies.com. A member of our support staff will respond to you as soon as possible.

Need Help? Get In Touch.

We'd love to hear from you!
The best way to reach us is via email: support@bigfrenchies.com.

Have questions about sustainability, shipping, return, exchange or something similar?

Check our FAQ page.