Setting up my 150 gallon tank....question re: cycling and is my tank 'ready'

[naesco]

Originally Posted by Rbacchiega

I hope you mean no more than 10 at a time. Only 10 snails in a 150 sure isn't that many. When I ran a sand bed I had 40-50 snails at any given time.

It may be that 10 is all that he may need. But, if more are needed, he can add more or let them populate themselves as Marie has suggested.
The myth of one snail per gallon is a marketing ploy.
We sometimes see marketing schemes where recommended 'clean up crews' are advertised.
They contain far too many snails and often contain snails like astrea that never see sand in the wild and, when they do find themselves in our aquarium, they find themselves stuck upside down in the sand only to be eaten by the first hermit crab that comes upon them.
The excess snails in these crews starve to death and are often see being eaten by hermit.
The hobbyist not the hermits is to blame. All the hermit is doing is eating a dead snail. Sometimes just an empty shell is found.