Additivesl Experation

[stylaster]

So i was looking at my different additives and i noticed most dont have any expiration date. (ie calcium, magnesium, alkalinity) Which makes since, because they arent a biological item. What about things like amino acids or liquid coral food? I noticed on my Elso amino acids there is no expiration date. Do they go bad? What about frozen food, assuming it doesnt get freezer burn or is left out to melt, would it expire?

 

[Connie]

The Acro Power I use has a shelf life of 2 years. I have used other brands that if refrigerated will be ok 6 months to 1 year. The frozen cubes would be good about the same amount of time as seafood we eat...3 - 6 months.