Live Sand

Hi. I am new to Brackish water tanks. I keep saltwater and I recently bought a few bags of live sand for a 55 saltwater set up. My husband and I have discussed doing the 55 as a brackish water set up instead. Can I still use the Live Sand I have for a Brackish water set up?

Thanks for any help.

Thanks. I guess I didn't even think of that. That's why I try to do all of my research "before" actually getting into something. I can always go out and get the other type of sand I have been reading about and return the Live Sand I have. I haven't opened it yet so the pet store should take if back OK. Thanks again. :0)