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RE: of calcium and clams (was something about salts)
John N. Alegre wrote:
>
> One problem with many brands of crushed coral is that they have
> silicates in them.
>
What exactly do you mean by "silicates" ? From a mineralogical standpoint,
"silicates" are essentially insoluble under the conditions likely to prevail
in an aquarium setup. If there are silicates in the crushed coral then it
must be there as an additive or a contaminant, e.g. sand grains crushed with
the coral, which would be inert.
>
> Silicates promote brown alage of the uglyest kind.
>
What is your evidence for this ? I would think that the sudden growth in
algae had more to do with the change in pH and/or dissolved Calcium
Carbonate (from the coral) than to silicates.
___________________________________________
Brian R. Watters
University of Regina
Regina, Sask. S4S 0A2, Canada
Ph: (306) 584-9161 (home); (306) 585-4663 (work)
Fax: (306) 585-5433
E-mail: bwatters at sk_sympatico.ca
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