Devilishturtles
Aquarium Advice Addict
There have been lots of myths surrounding the silica vs aragonite sand issue, but IMHO, there is nothing to worry about. Silica is bad for humans IF you breathe in a lot of the dust. If you rinse the sand off well (for your fishtank or for a sandbox) to eliminate a lot of the dust I don't see a problem. Of course, I'm not health professional either, so.
Silica based sand is fine to use in a reef tank, though aragonite based sand is better for the water quality because it provides and continual buffer for pH and calcium, etc.
Silica based sand is fine to use in a reef tank, though aragonite based sand is better for the water quality because it provides and continual buffer for pH and calcium, etc.