RE: K,Ca, Mg

["Thomas Barr" <tcbiii at earthlink_net>]

>Folks on this list report no problems with rather high potassium levels,
>but hydroponics literature does warn that potassium needs to be kept
>reasonably balanced with calcium and magnesium.  If you plan to use
>potassium bicarb to add 3 or 4 degrees of buffer capacity (which would
>produce 42 or 56 ppm of potassium) then you might want to make sure that
>your water also has a couple degrees or more of GH.
>
>
>Roger Miller

I wise idea indeed. I tend to have a higher GH than most(GH 9). Perhaps lack
of this was Shawn Prescott's issue with high K+?
Regards, 
Tom Barr

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