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Re: CO2 automation

I use a very small power filter for CO2 injection.  I bubble the CO2
(from a pressure tank) into the filter intake.  The filter box does not
have any filter media, just a few oyster shells. I just use it to
provide circulation and distribute the CO2 and calcium. The filter is on
the same timer as my lights, so the CO2 injection virtually stops at
night.  It is an amazingly cheap setup.

Regards, Bob

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