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Posted by Wayne Sallee on October 3, 2005, 2:28 pm
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Yes calcium sand can scratch glass, but not as easily as
silica cand. You don't want to get calcium sand under your
algae magnet, or it can scrach your glass. Your live
rock can also scrach the glass.
Wayne Sallee
Wayne's Pets
Wayne@WaynesPets.com
Thomas Bartkus wrote:
>
>>Calcium sand will not cause calcim to precipitate out.
>>
>>Calcium sand will not make it hard to maintain calcim and
>>alkalinity levels.
>>
>>Calcium sand will scrach the glass
>>
>>You want clacium sand.
>
>
> I think you meant to say that calcium sand won't scratch!
>
> If I interpret these posts correctly -
>
> There isn't much point to chasing after a particular "flavor" of sand for
> imaginary benefits to water chemistry. And coral, dolomite, aragonite sands
> are all acceptable alternatives to silica with the added benefit that they
> aren't as likely to leave scratches on the aquarium glass.
>
> I just want something non-toxic that won't scratch my fused silica (glass!)
> aquarium.
> Thomas Bartkus
>
>
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>
> I *do* want to use calcium carbonate based sand because -
> It will help keep up the calcium & alkalinity & pH & trace elements as the
> sand slowly dissolves into the water. AND it won't scratch the glass like
> a silica sand.
>
> I *don't* want to use calcium carbonate based sand because -
> Calcium will preciptate out onto the CaCO3 sand and cause the
> alkalinity and pH to drop. I will have a heck of a time maintaing calcium
> & pH. Better to use a neutral silica or perhaps aragonite sand.
>
> What to believe?
> Thomas Bartkus
>