Welcome to AA, Saltwaterlvr.
Silica sand is, to put it simply, just fine for aquariums. But.. it does have a few drawbacks over aragonite sand (such as livesand). It doesn't buffer your water so you *may* have problems with pH. Aragonite sand naturally buffers water as it breaks down. Silican sand doesn't break down over time, so it doesn't have any buffering capacity. It can compact a little easier than aragonite sand, but with some sand sifters that's no problem either.
And...that's about it. If you want to mix some silica and aragonite (LS
), that'd be perfect.
Hope that makes sense.
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