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Best place for the co2 diffuser?

716 Views 1 Reply 2 Participants Last post by  xmas_one
Would it be better as low as possible in the main tank or in the sump before the return pump?

If I can modify my selected diffuser to 100% diffusion or at least to trap the micro co2 bubbles then I am thinking it may be better in the sump as it will have more time in the tank system when being returned to the main tank?

All comments welcome.

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On a tank that size you should be using a reactor on the return line.
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