ADA · Diffuser
Pollen Glass Beetle
Pressurised CO2 tanks where you want a neat, nearly invisible diffuser and are happy to clean glass now and then.
3 models
UNS · Diffuser
UNS Pro Inline CO2 Diffuser
An inline diffuser that fits in your canister's outflow hose, so CO2 is dissolved before the water reaches the tank and nothing extra sits in the scape. The ceramic disc is side-mounted, which keeps flow restriction down and makes it easy to swap.
Updated
Will it suit my tank?
litres
Best for
Canister-filtered CO2 tanks where you want a clean, equipment-free look inside the glass.
Worth knowing
It needs a canister with enough flow, and the disc will need cleaning or replacing now and then.
What stands out
- Three hose sizes: 12/16, 16/22 and 20/25 mm
- Side-mounted replaceable ceramic disc
- Keeps diffuser clutter out of the tank
- 12 mm fits Delta 60/90 and Blitz 32 oz; 16 mm fits Delta 120
Models and specs
| Model | Hose | Hose |
|---|---|---|
| 12 mmUNSID1201 | 12 mm | 12/16 mm (1/2 in) |
| 16 mmUNSID1601 | 16 mm | 16/22 mm (5/8 in) |
| 20 mmUNSID2001 | 20 mm | 20/25 mm (1 in) |
- Brand
- UNS
- Disc
- Replaceable ceramic, side-mounted
- Install
- Canister filter outflow tubing
Figures from Glass Aqua's product listing. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all co2
ADA · Diffuser
Pollen Glass Type 3
Small to medium pressurised CO2 tanks where an upright glass diffuser suits the look.
1 model
Qanvee · Diffuser
Inline CO2 Atomizer
Planted tanks with a canister filter, especially 190 L and up, where you want hidden CO2 hardware.
2 models
Twinstar · Diffuser
CO2 Diffuser
- Tank size
- 121–121 L
Small to large planted tanks where you want a tough, tidy in-tank diffuser with the bubble counter included.
3 models
Frequently asked questions
Quick answers about the UNS Pro Inline CO2 Diffuser, drawn from its specs.
Who is the UNS Pro Inline CO2 Diffuser best for?
Canister-filtered CO2 tanks where you want a clean, equipment-free look inside the glass.
Is there anything to watch out for with the UNS Pro Inline CO2 Diffuser?
It needs a canister with enough flow, and the disc will need cleaning or replacing now and then.
What are the alternatives to the UNS Pro Inline CO2 Diffuser?
Other co2 worth comparing: ADA Pollen Glass Beetle, ADA Pollen Glass Type 3, Qanvee Inline CO2 Atomizer. Add any of them to the compare table to see the specs side by side.
What sizes does the UNS Pro Inline CO2 Diffuser come in?
3 options: 12 mm, 16 mm, 20 mm.