DigDug Posted November 22, 2021 Share Posted November 22, 2021 Good Afternoon Everyone Can I put a co2 diffuser in the back filter area of a fluval flex? 1 Link to comment Share on other sites More sharing options...
Beardedbillygoat1975 Posted November 23, 2021 Share Posted November 23, 2021 You could. Best option would be an in line diffuser in the tube from the pump to the output. Link to comment Share on other sites More sharing options...
HotTunaCartel Posted November 23, 2021 Share Posted November 23, 2021 On 11/22/2021 at 5:05 PM, DigDug said: Good Afternoon Everyone Can I put a co2 diffuser in the back filter area of a fluval flex? I would say so. I have a co2 diffuser under a aquaclear 50 and it does fine spreading it around from just the downdraft of the outflow. Link to comment Share on other sites More sharing options...
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