The UNS Disposable CO₂ Cartridge is the easiest shortcut to a clean, mess-free carbon dioxide supply for nano aquariums and desktop aquascapes. Packing 95g of pure CO₂ into a compact, steel-shelled cartridge, swaps are fast and effortless: unscrew the spent cylinder, thread a fresh one into your regulator, and your stems, carpets, and rare buce are back to pearling. No heavy tanks, no refill trips, and zero hassle, making it the ideal solution for quick maintenance, travel setups, or hobbyists who prioritize ultimate convenience in a small footprint.
This listing includes the CO2 cartridge ONLY! Pair this disposable CO2 cartridge with the Disposable CO2 Cartridge Holder to ensure it remains safely upright and movable.
**Important Shipping Note: Due to federal transport regulations for pressurized gas, this item can only be shipped to the lower 48 states of the US via UPS Ground. Express or air shipping methods are completely unavailable for this product.
Note: Gas depletion rates vary based on target bubble count, photoperiod duration, plant mass, and aquarium volume. To ensure a stable workspace, pair with a dedicated cartridge holder.
| Attribute | Specification |
|---|---|
| Brand | Ultum Nature Systems (UNS) |
| Model | UNS 95g Disposable CO2 Cartridge |
| Gas Volume Capacity | 95 grams (3.35 oz. / 0.12 L) |
| Cartridge Type | Disposable / Threaded Steel Shell |
| Regulator Compatibility |
Designed to pair with the UNS Micro CO2 Regulator or |
| Recommended Accessory | UNS Cartridge Holder (Keeps cylinder upright and stable) |
1. How long does a 95g disposable CO2 cartridge last?
On a nano aquarium under 10 gallons running a standard 1 bubble per second rate for 8 hours daily, a single 95g cartridge typically lasts between 1 to 2 months.
2. Can I refill this cartridge once it is empty?
No. This is a single-use disposable steel cartridge. Once empty, simply unscrew it, safely recycle or dispose of it, and thread a new cartridge onto your regulator stem.
3. Are there any shipping restrictions on disposable CO2 cartridges?
Yes. Due to federal transport regulations for pressurized gas, this item can only be shipped to the lower 48 states of the US via UPS Ground. Express and air shipping methods are unavailable.
Setting up pressurized carbon dioxide is far simpler than it appears! Explore our step-by-step guides to master your setup:
Overall rating: 4.857143 / 5 from 28 reviews.
Review topics: ["replacement","shipping","value","works","price","packaged","cartridge"].
"Came quick, well packed."
"The units are too small and don't last long for larger tanks, but otherwise they work well with the proper associated equipment required."
"Great product"
"I received what I ordered."
"Just really glad they are back in stock, these always last me at least 3 weeks 👍🤙🌱🌿"
"Plenty of CO2! I expect one to last at least a month, if not 2, at 2 bubbles/second. Buying three at a time really sets you up for a while of CO2 without the concern of getting more or finding a service to refill paintball canisters. 100% plan to buy again when they run out!"
"Works well. As described. Good price."
"I just picked up the new micro co2 kit and an extra cartridge and so far it’s all working out great. Would recommend"
"Work well on the desktop nano tanks. Paired with the UNS mini two stage regulator."
"The cylendars I bought from you are doing well and good."
