Re: Problems with a gift!/e-store ideas

[Mike & Diane Wise <apistowise@bewellnet.com>]

Bob,

I'm confused by your answer. Think about what is happening to ancient marble
monuments around the world right now. They are disintegrating from pollutants &
acid rains in the air. Marble is metamorphosed limestone - CaCO3. Metamorphosed
limestone (marble) is denser and less porous, with larger mineral grains, than
sedimentary limestone.  But it reacts to chemicals in the same way limestone
does, only a bit slower. Would you put put limestone in a tank with soft acid
water??. Perhaps you could put an inert coating over it for protection, but most
marbles have veins, too.  I would think these would be structural weaknesses. I
wouldn't use marble as a backing without some other material (glass) as a
support.

Mike Wise

IDMiamiBob@aol.com wrote:

> Marble should be neutral to the chemistry o your water.  It would look pretty
> neat as a back piece.If it is polished, silicone should stick without any
> problems.  As for thickness, I can't say, and won't hazard a guess.
>
> Bob Dixon
> Cichlid Trader List Administrator
> http://cichlidtrader.listbot.com
>
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