Do supplements expire.

[Casey8]

Obviously the stuff you have right now is over a year old. I won't put anything in my tank if I know it is more older than 1 year with no expiry date on it. That is why when I buy something that has no date, I will buy it in a small amount to use just enough for one year. And I am more concerned with liquid but not very much with powder. If I were you I won't use any of them.