Nuts!
Marc's article refers to QUEEN CONCH, which has a much different diet and behaviour than other members in the family.
One inch of sand is sufficient. If you put too much in, the thing will bury completely and you'll have trouble finding it (spy out the siphons).
You also want to avoid deep sand for tank sanitation puposes. Try to get the coarsest sand you can find, to facilitate dissolved oxygen movement. "River Sand" is fine, but fine coral debris is too coarse for burrowing snails. It needs to be ground up into sand-sized particles so the snails can burrow effectively. If it's too pebbly, the critter will dig out a hole and just sit there... irritated. That's fine for Murex, but conchs are active and like to move around a lot.
What are you using for a filter?
Marc's article refers to QUEEN CONCH, which has a much different diet and behaviour than other members in the family.
One inch of sand is sufficient. If you put too much in, the thing will bury completely and you'll have trouble finding it (spy out the siphons).
You also want to avoid deep sand for tank sanitation puposes. Try to get the coarsest sand you can find, to facilitate dissolved oxygen movement. "River Sand" is fine, but fine coral debris is too coarse for burrowing snails. It needs to be ground up into sand-sized particles so the snails can burrow effectively. If it's too pebbly, the critter will dig out a hole and just sit there... irritated. That's fine for Murex, but conchs are active and like to move around a lot.
What are you using for a filter?