I bought them the day they were shipped, yesterday, so they went from the bag to the tank at LFS, then bag again to my 5.5g and then they would need to be bagged AGAIN and moved into another tank, all in 24 hours?....then he'd bag them up and move again in another weekit doesn't, but isn't your main tank heated?
I think the risk of shock and stress outweighs the temp. unless stated otherwise about a minimum survivable low temp