[APD] RE: Aquatic-Plants Digest, Vol 9, Issue 12

[Greg Turner <greg at island_net>]

Yes, while most come factory calibrated they drift after awhile (depends on
model).  The calibration solutions are not expensive (about $5) and
definitely worth it if it's going to be used as a CO2 controller.

Greg Turner
<a href=www.aquabay.ca>Aquabay.ca</a>

> I am getting ready to order a pH/CO2 controller for my system(Milwaukee
> SMS 122) and was wondering if I also need to order pH calibration
> solution.Is it required? Thanks.
> -Mark Vanvick


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