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Re: Low CO2 ?? (Re: Aquatic Plants Digest V4 #877
Dave Gomberg sez:
> Put some aquarium water in a soft-drink bottle (1/4 full), test the
> pH, shake the water vigorously (with the cap on), test pH again. If the pH
> drops a lot, you have plenty of CO2, something else is wrong. If the pH
> doesn't drop at all, either you have next to no CO2 or the kit is ng. HTH.
Don't you mean, if the pH *raises* a lot?
"I have seen the future and it is just like the present, only longer."