Used 2.5 lb Aluminum CO2 Tank

Used 2.5 lb CO₂ Tank | Compact Brewing & Aquarium Use

Lightweight, Portable CO₂ Tank for Small Systems

Our used 2.5 lb CO₂ tanks are perfect for brewers, aquarists, and hobbyists who need a compact, portable source of food-grade CO₂. These aluminum tanks are durable, lightweight, and easy to handle—ideal for kegerators, small draft systems, freshwater aquariums, and saltwater calcium reactors. Their smaller size makes them great for mobile setups, test systems, or tight spaces where larger tanks won’t fit.

All used tanks are sold empty and ready for refill. If you’re local to our Vista, CA shop, you can also take advantage of our 2.5 lb CO₂ exchange program to swap your empty tank for a filled one. Please note: filled CO₂ tanks cannot be shipped.

Key Features:

• Tank Size: 2.5 lb capacity
• Material: Lightweight, corrosion-resistant aluminum
• Applications: Kegerators, mini-draft systems, freshwater aquariums, saltwater calcium reactors
• Condition: Used, fully tested and certified
• Shipping Note: All CO₂ tanks ship empty. Filled tanks cannot be shipped.

Why Choose a Used 2.5 lb CO₂ Tank?

• Compact Size: Easy to store, transport, and install in tight spaces
• Cost-Effective: Affordable alternative to brand-new CO₂ tanks
• Multi-Purpose: Great for homebrewing, aquariums, and small-scale CO₂ applications

Important Shipping Information

All CO₂ tanks, new or used, ship empty. Filled tanks are not eligible for shipping. Our 2.5 lb CO₂ exchange service is available for local pickup customers only.