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.

Qanvee · Diffuser
An inline CO2 diffuser that fits on the outflow hose of a canister filter, so the fine mist enters with the return flow and no diffuser sits in the tank. It comes apart fully for cleaning and the ceramic can be replaced.
Updated
Planted tanks with a canister filter, especially 190 L and up, where you want hidden CO2 hardware.
Needs at least 30 psi working pressure, must go on the outflow (never the inflow) and needs pressure-rated tubing.
| Model | Hose | Hose |
|---|---|---|
| M1QVM1 | 12 mm | 12/16 mm |
| M2QVM2 | 16 mm | 16/22 mm |
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.
ADA · Diffuser
Pressurised CO2 tanks where you want a neat, nearly invisible diffuser and are happy to clean glass now and then.
ADA · Diffuser
Small to medium pressurised CO2 tanks where an upright glass diffuser suits the look.
Twinstar · Diffuser
Small to large planted tanks where you want a tough, tidy in-tank diffuser with the bubble counter included.
UNS · Diffuser
Any pressurised CO2 tank where you want a simple, low-cost in-tank diffuser.
Quick answers about the Qanvee Inline CO2 Atomizer, drawn from its specs.
Planted tanks with a canister filter, especially 190 L and up, where you want hidden CO2 hardware.
Needs at least 30 psi working pressure, must go on the outflow (never the inflow) and needs pressure-rated tubing.
Other co2 worth comparing: ADA Pollen Glass Beetle, ADA Pollen Glass Type 3, Twinstar CO2 Diffuser. Add any of them to the compare table to see the specs side by side.
2 options: M1, M2.