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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
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Description
UNS Pro Inline CO2 Diffuser - 20mm (1in)Achieve superior CO2 diffusion with the UNS Pro Inline CO2 Diffuser, designed for seamless integration into your filtration setup. This premium diffuser connects directly to your canister filters tubing, ensuring efficient and uniform CO distribution throughout your aquarium. Unlike existing Inline CO2 diffusers, the UNS Pro Inline CO2 Diffuser does not impede your filter's flow by placing the ceramic plate on the side of the diffuser. This makes the
Achieve superior CO2 diffusion with the UNS Pro Inline CO2 Diffuser, designed for seamless integration into your filtration setup. This premium diffuser connects directly to your canister filter’s tubing, ensuring efficient and uniform CO₂ distribution throughout your aquarium.
Unlike existing Inline CO2 diffusers, the UNS Pro Inline CO2 Diffuser does not impede your filter's flow by placing the ceramic plate on the side of the diffuser. This makes the ceramic plate easy to replace and clean as well.
Key Features
- Fine ceramic disc provides ultra-fine CO2 bubbles, maximizing gas dissolution and minimizing wasted CO2.
- Available in 12mm (1/2"), 16mm (5/8"), and 20mm (1") tubing sizes for compatibility with a wide range of external filters.
- Fits perfectly into the UNS Delta and Blitz filter lineup.
- Installs outside the tank, eliminating visual clutter from your display tank.
- Built from high-quality, corrosion-resistant materials for long-lasting performance and easy maintenance.
- Ensures stable CO₂ levels to support lush plant growth and balanced water chemistry.
- Can be used inside UNS Holding systems to reduce clutter and provide superior CO2 coverage.
Whether you're a seasoned aquascaper or just starting your planted tank journey, the UNS Inline CO2 Diffuser offers a clean, efficient, and professional-grade solution to elevate your aquarium’s potential.
Compatible with pressurized CO₂ systems only.
For use with canister filters or UNS Plant holding systems only.
Not suitable for use with sponge or internal filters.
Bulk Discounts:
| Quantity | % Off | Price Per Unit |
| Single Unit | - |
$27.00 |
| 5 Pack | 10% |
$24.30 |
| 10 Pack | 20% |
$21.60 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Very happy with this!
Color: Black
Good solid quality, fits well in the space I have available and is well thought out for it's purpose. Good value.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Ease & attraction on counter.
Color: Black
The best thing I have bought in a while. The stability & the ease of allowing items to dry make it worth the cost.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Sturdy and practical
Color: Black, Color: Black
Doesn’t take up a lot of space. The basket to hold your brushes can come out. So if you have a shorter brush you can use it without the taller basket. Holds my hand soap and dish soap with extra room if needed. Has a little shelf on the front that I put my straw cleaning brush. The bottom dish comes out for easy cleaning and catching water drips. It’s sturdy and pretty cute.
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Reviewed in the United States on June 19, 2025
★★★★★ 5
Best organizer with a water spout to keep them counter dry!
Color: Black - 9.25″, Color: Black - 9.25″
I am thoroughly impressed with this product. I tried a product that goes over the middle of the sink and it blocked everything off and would always fall off in a funny ways. I had no room for my pots and pans and started getting irritated with it. This is up and out of the way has a little spicket to drain off the water and as you can see I got all of my sponge and soaps in the same spot which is wonderful cleaned off my counter beautifully. I chose the color black to blend in with my black countertop and also to look nice and clean on the counter. One of the best organizers I have ever found for a countertop. It's sturdy metal so far seems rust resistant, but I haven't had it long enough to know for sure. Mobilize easily to clean. Fabulous little sink caddy. I highly recommend to those of you that like to be organized and keep your counter nice and dry, and still arrange things so that it can be out of the way.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Excellent, all around caddy!
Color: Black - 9.25″
The Cisily Sink Caddy is working out nicely.
It holds my sponges, scrubbers and soap bottles. It’s easy to clean and it Excellent all around is well made. I am very happy with my purchase!
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Reviewed in the United States on May 11, 2026