shelve life for chemicals?


Is the one? some of the chemicals that I own have no expriation date on them. Just a general ideal if anyone has one, Im not even up and running a tank yet (and now it looks like it could be some time before I am) but could not pass up on the deal at the time for them due to an closing of a lfs. Maybe I should just sell them on here. I just got them in June of this yr. Thanks