Fluval Ceramic CO2 Diffuser

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The Ceramic CO2 Diffuser effectively dissolves CO2 into the aquarium, which is vital to the health and condition of your plants. FAQs: My new ceramic CO2 diffuser disc is emitting large bubbles, rather than a fine mist. Is this normal? Yes, new ceramic CO2 diffuser discs can take up to a week to begin emitting pressurised CO2 in a fine mist. It’s normal to see larger bubbles for the first few days of operation. Show more