CO2 Accessories Available

The UNS CO₂ Diffuser is designed for aquascapers who want clean visuals and reliable performance, because no one wants a bulky piece of plastic dis...

If you started your high-tech nano tank journey with disposable cartridges but are ready to transition to a more cost-effective, long-term solution...

Over months of continuous operation, the microscopic pores on your inline diffuser's ceramic disc can slowly trap organic buildup, debris, or hard ...

**This item qualifies for free shipping!** If you’re trying to grow demanding stems, dense carpets, or rare buce, consistent CO₂ delivery is key. B...

The UNS Micro CO₂ Regulator Kit packs a regulator, a silent solenoid, and a bubble counter into one sleek, incredibly compact bundle. It is the ult...

The UNS Micro CO₂ Bubble Counter gives you a crystal-clear visual on exactly how much CO₂ is entering your aquarium so you can keep your plants hap...

The UNS Micro CO₂ Solenoid is the brain of your gas setup, allowing you to completely automate your tank's schedule. Simply plug it into a standard...

The UNS Micro CO₂ Regulator is the absolute smallest model in the lineup, designed specifically to save space without cutting any corners on perfor...

The UNS CO₂ Cylinder Pro (2.5LB) is a heavy-duty, premium aluminum tank that supports thriving, high-tech planted aquariums. Lightweight, corrosion...

Over time, the fluid inside your glass drop checker will naturally fade, lose its vibrancy, and become less reactive to your tank's chemistry. If y...

When you are injecting pressurized CO₂, finding the sweet spot is a delicate balancing act. Too little gas stalls plant growth, while too much can ...

The UNS CO₂ Cylinder Pro (20LB) supports planted tanks that demand long‑term stability and a serious, uninterrupted CO₂ supply. With a massive, ref...

The UNS CO₂ Cylinder Pro (5LB) is a compact, heavy‑duty aluminum tank engineered to give planted‑tank hobbyists reliable, long‑lasting CO₂ delivery...

**This item qualifies for free shipping!** If you love running high-tech plants but hate looking at bulky diffusers, ceramic discs, and messy airli...

One wrong move during maintenance and your cartridge is tipping, pulling on your airline tubing, or putting stress on your regulator threads. The D...

When you are managing a beautiful nano aquarium or a compact desktop scape, finding space for bulk equipment can be a real challenge. The UNS CO₂ P...

The Aquario NEO CO2 Normal Tiny features a shorter tube length and can be used for both rimless and rimmed aquariums. Diffusers in the Tiny series ...

The Aquario Neo P-Clip is an accessory for any CO2 setups. This clip will hang from the edge of the rim and run CO2 straight into the diffuser. The...

The Aquario Neo U-Clip is an accessory for any CO2 setups. This clip is designed to sit on the rim of tanks and keep airline tubing secure. When us...

The UNS Pro CO₂ Manifold Block is a premium add-on extension designed to clip directly onto your existing UNS Pro Dual Stage Regulator. By stacking...

Attach your CO2 regulator to a paintball CO2 tank using this adapter! A built-in pressure relief hole is included for increased safety measures whe...

**This item qualifies for free shipping** Your regulator is the real control center of your CO₂ system, and it has one job: take that 700‑plus PSI ...

*This item qualifies for free shipping!* If there is one tiny piece of hardware that can save you hundreds of dollars in equipment damage, this is ...

This CO2 diffuser dissolves carbon dioxide into a fine mist of bubbles which allows for better dissolution in your water column. Twinstar's CO2 dif...