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
Twinstar · Diffuser
Twinstar CO2 Diffuser
A clear acrylic CO2 diffuser with a fine ceramic disc and a bubble counter built into the stem. Acrylic means it survives a knock during maintenance far better than glass.
Updated
Will it suit my tank?
litres
Best for
Small to large planted tanks where you want a tough, tidy in-tank diffuser with the bubble counter included.
Worth knowing
Soak it before first use for finer bubbles, and expect to clean the disc every so often as it clogs.
What stands out
- Three sizes matched to tank volume
- Built-in bubble counter
- Shatter-resistant acrylic body
- Works with pressurised or DIY CO2
Models and specs
| Model | Tank size | Tank size |
|---|---|---|
| SmallTWSCO2S | up to 49 L | Up to 13 US gal |
| MediumTWSCO2M | up to 121 L | Up to 32 US gal |
| LargeTWSCO2L | from 121 L | 32 US gal and up |
- Brand
- Twinstar
- Material
- Acrylic with ceramic disc
- Bubble counter
- Built in
- Mounting
- Suction cup
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
UNS · Diffuser
CO2 Diffuser
- Tank size
- 197–197 L
Any pressurised CO2 tank where you want a simple, low-cost in-tank diffuser.
3 models
Frequently asked questions
Quick answers about the Twinstar CO2 Diffuser, drawn from its specs.
What size tank is the Twinstar CO2 Diffuser for?
The maker rates it by model: Small up to 49 L, Medium up to 121 L.
Who is the Twinstar CO2 Diffuser best for?
Small to large planted tanks where you want a tough, tidy in-tank diffuser with the bubble counter included.
Is there anything to watch out for with the Twinstar CO2 Diffuser?
Soak it before first use for finer bubbles, and expect to clean the disc every so often as it clogs.
What are the alternatives to the Twinstar 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.