Shanspau
New Member
I have some leftover premixed saltwater that's a week old. I have been told in the past that I shouldn't let the SW sit for longer than 24 hours before you use it. my LFS is closed today and I have been away on business. My tank needs a water change ASAP and I was thinking of using the premixed SW that I have. Is there anything wrong with using this water if it passes the testing and salinity?