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Re: "Hardness" (Alkalinity, etc..)
- To: Aquatic-Plants at actwin_com
- Subject: Re: "Hardness" (Alkalinity, etc..)
- From: Paul Sears <psears at nrn1_NRCan.gc.ca>
- Date: Thu, 9 Apr 1998 09:07:28 -0400 (EDT)
- In-Reply-To: <199804090748.DAA22450 at acme_actwin.com> from "Aquatic Plants Digest" at Apr 9, 98 03:48:09 am
> From: "A. Inniss" <andrewi at u_washington.edu>
> Subject: Re: "Hardness"
> BTW, when using the pH/KH table, if one has high phosphates
> (from lots of fish food, not from phosphate buffers being added) in the
> tank water being tested, will such phosphate also affect the accuracy of
> the table? And what about the sulfates from the MgSO4? Will they affect
> the accuracy?
If by "lots of phosphates", you mean a ppm or so, the error will
be negligible. Phosphates will interfere, but that little would not be
Sulphate will not interfere at all, being the anion of a strong acid.
Nitrate won't either, for the same reason.
Paul Sears Ottawa, Canada