I bought 50lbs of dry sand
Where did you buy the sand? Is there a brand name on the bag? Is it sugar sized granules?
Is it aragonite or silica based?
will seed the dry sand with infauna. Adding the cocktail shrimp will start the nitrogen cycle needed to coat the sand and make it LS
which will help it settle.
How big a tank do you have? It sounds like you are going with a SSB
Do you have or are you thinking about adding a sump or refugium?
Try detailing your planned set-up in this or a new post and ask for opinions. Learn from the mistakes the rest of us have made. Plan out what you want your tank to look like, post that and your ideas of what equipment you think you need or already have, your lighting, the livestock you would like to keep and ask for opinions on all of it.