Diffuser allows an effective method for CO2 to enter aquarium. The CO2 is pushed through a porous medium that breaks down the gas into a fine mist of bubbles. These bubbles are then more easily absorbed by aquarium water.
Four sizes available:
| Size | Diameter | Tank Size |
| Tiny | 11mm | under 50L |
| S | 13mm | under 100L |
| M | 17mm | 100-200L |
| L | 23mm | Above 200L |
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