Super CO2 Diffuser

This Super CO2 Diffuser’s specialized ceramic membrane ensures that the CO2 dissolves very well in the water, as it produces a great number of very fine bubbles.
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[@Agcz1213]

This is suitable for upto what size tank?

[@davidwebb6632]

What is the pressure you have kept for it to work? I also have but my does nit release any bubbles