CO2 Replacement Cartridge

This 95g CO2 Replacement Cartridge offers a simple, reliable way to maintain CO2 injection in a planted aquarium. Pre-filled and ready to use, each cartridge provides a consistent carbon source to support healthy plant growth in nano and small aquariums.

Designed for ease of use, cartridges can be quickly swapped out with no refilling required, making them an ideal option for hobbyists looking for a compact and beginner-friendly CO2 solution. We recommend pairing this cartridge with the UNS Micro CO2 Regulator or the UNS Mini Dual Stage Regulator!

What This is Best For
- Nano and small planted aquariums (typically up to ~20 gallons)
- CO2 cartridge-based systems
- Beginner-friendly CO2 setups
- Quick and easy CO2 replacement without refilling

Product Highlights
- Pre-Filled and Ready to Use: Each cartridge comes pre-filled, allowing for quick installation and immediate use without additional setup
- Consistent CO2 Supply: Provides a steady carbon source to support plant growth, coloration, and overall aquarium health
- Quick Replacement: Empty cartridges can be easily swapped by twisting off and reconnecting a new bottle, reducing downtime
- Compact and Space-Efficient: Ideal for nano aquariums or setups where space is limited.

A single 95g cartridge typically lasts 2–3 months depending on tank size, plant density, and CO2 usage (based on a ~5 gallon aquarium). Larger tanks or higher-demand setups may require more frequent replacement.

For larger aquariums, consider upgrading to a paintball or full-size CO2 system for greater capacity and long-term efficiency.

Important Information
- Designed for use with compatible CO2 regulators (such as UNS micro and mini regulators)
- May not fit all regulator types
- Optional base stand recommended (sold separately) to keep cartridge upright and ensure proper operation
- Available for shipping within the lower 48 states only
- Ships via UPS Ground due to pressurized contents
- Final sale item