Re: CO2 input into powerhead

>From: stevensj at calshp_cals.wisc.edu
>Date: Wed, 24 May 95 11:09:57 CDT

>So ... the moral of the story is:  CAUTION when adding extra CO2 or changing
>the delivery method: monitor pH for several hours afterward & be prepared
>to add baking soda if necessary.

Definitely, especially when you have soft water (KH < 4 dH) ! This is why some 
people use the pH controller with their CO2 injection on the first place.