"Tidepool Geek" wrote in message ...
The live sand you bought mainly contains bacteria but it's unlikely to
have much else in the way of infauna.

Unlikely?? Are you kidding?
Will have NOTHING else, becasue nothing else would
survive shelf life in the sealed plastic bag.

But I would mix both sands since the coraline sand
could be pritier than the paver sand - I would put
paver sand on the bottom layer than coraline from bag.