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Re: ph, gravel, and filters
Walter,
Dave at Valley Pets bought his black sand from ME about 10 years ago when I was
in pet supplies wholesale. I sold it in various sizes, but it was withdrawn by
the supplier after a year or so.
As Ken mentions, it did have some bits of mollusk shell in it, ~10% in coarse
grades but much less in finer grades. The black grains are actually basalt
(lava). The green glassy grains were olivine, a common component of tholeitic
(oceanic) basalts. Basalt is relatively brittle (for a rock) so it disintegrates
quickly in nature. That's why you don't see very many black beaches around the
world. In an aquarium it is inert and should last a thousand lifetimes (yours,
not your fishes').
Mike Wise
Walter wrote:
> Valley pets in Colorado Springs has a few tanks with Hawaiian black beach
> sand in them.
>
> I don't know if they sell it but they may be able to tell you where they got
> it.
>
> There number is 719-475-9661
>
> Walter McCree
> USA.Net
> wmccree@usa.net
>
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