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Re: [APD] Re: Aquatic-Plants Digest, Vol 3, Issue 28

"Not adequate" would be a better way to put it, if I
understood Roger correctly. He recommended using
Hydrochloric acid (swimming pool acid) instead at a 5%-10%
solution. Vineger is too weak to reveal the carbonates that
might be on the rock or in it at/near the surface.

--- Joey Chen <hubbahubbahehe at yahoo_com> wrote:
> So the vinegar test was debunked?  so it's no good ?

S. Hieber

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