What kind of snails/crabs and how much should you put in a 360 gallon aquarium? There is around 180 pounds of live rock and crushed coral at the bottom.
In my 50
10 astrea snails
6+ ceriths reproducing
5 nassarias snails
An amblygobius phalaena
A small scopes tang
I think the 2 per 10 gal rule works with astrea snails