How long does Instant Ocean salt last?

[Bao]

Hello everyone,

I want to buy about 20 boxes of "Instant Ocean Sea Salt - 200 gal" and use it for 2-3 years. I can store them in my house where it is dry.

So how long to they last?
Is this a good idea to buy many bags and use it for years or they will expired and become useless?

Thanks,
Bao

 

[Pkunk35]

I think some settling may occur, but I do not think the salt expires. I would think an email to IO might yield more reliable answers.

 

[ifarmer]

why do you need to buy that many? unless you can get it at dirt cheap.
These salt always on sale all the time.

 

[Bao]

Pet Supplies and Fish Supplies at That Fish Place - That Pet Place has them on sale for 35 dollars a box. Most of the time I just buy a lot of stuffs and I don't have to think about it again.