Re: GH and KH
> - ---------- Forwarded message ----------
> From: Dan Simon <dan.simon at attws_com>
> To: "'aquatic-plants at actwin_com'" <aquatic-plants at actwin_com>
> Subject: KH & GH test kit
> Date: Mon, 20 Jan 1997 07:57:27 -0800
> I purchased the Tetra KH and GH kit yesterday. I am aware that Seattle
> water is very soft but geez!! I'm starting to wonder if I'm using the kit
> The KH kit says to add the drops until the vial turns light yellow.
> After 2 drops its clear and then on the third drop I start to see a
> faint "yellow-ish" color. However, there is no color change
> progression as the instructions indicate. Is the KH so low that it
> just isn't registering?
I get about 20ppm alkalinity (KH, (pardon any chemical imprecision :-)))
out of the tap in Seattle. This agrees with the city water report that I
got last year. We do have really soft water, accumulated from snowmelt
draining over igneous and metamorphic rocks. What else would one expect?