To: Aquatic-Plants at actwin_com (Aquatic-Plants)
Subject: re:Carbonate hardness
From: "David W. Webb" <dwebb at ti_com>
Date: Wed, 28 Feb 1996 10:11:49 -0800
Conversation-Id: <BMSMTP82553081513a0206807 at dlep1_itg.ti.com>
>From: MGW925 at aol_com
>I have a 55 gal tank, temp 80 F, ph=6.4/6.6, no ammonia, no nitrites, slight
>measure of nitrates, no phosphates. With a tetra kit, the GH took 3 drops
>and the KH took 1 drop to make the described color changes. I admit
>confusion about the measurement: degrees? ppm?
For the Tetra kits, one drop = 1 dGH (degree of German Hardness). If you want
to get fractions of degrees, double, or triple the amount of water and assume a
proportionate increase in drops per dGH.
I thought it was 17 ppm = 1 dGH, but someone else posted the actual value
recently and it's closer to 18 ppm = 1 dGH.
David W. Webb in brrr-chilly, Plano TX.