Does salt go bad?

Discussion in 'Middle Tennessee Reef Club' started by SRT80, Aug 18, 2018.

  1. SRT80

    SRT80 Active Member

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    I just found an unopened box of reef crystals 25 gal. mix. I can't remember when I bought it. It's been stored in a large Rubbermaid bin. I was just looking for stuff and found it. I guess I might have bought it a couple years ago maybe?

    Does this salt have a shelf life? Should I toss it or think it's safe to use?

    Thanks.
     
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  2. Tennsquire

    Tennsquire Active Member MTRCMember

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    It can absorb moisture over time and clump together, making it hard to mix. But I dont think it goes "bad" like a gallon of milk goes bad. I've used unopened bags I found in the garage that were several years old with no I'll effects.
     
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  3. Dr. Reef

    Dr. Reef Always at your service R2R Supporter Reef Squad R2R Excellence Award Build Thread Contributor Article Contributor

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    Agree above +1
    It doesnt go bad. It it had organics they are gone. Might mix with some ammonia in water or smell. If it is clumpy elements won't mix properly or in right ratio etc.
     
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  4. SRT80

    SRT80 Active Member

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    I guess there was something not right about it. I tried to mix 10 gallons and a lot of the salt would not dissolve. I did the recommended cups and the salt level was like 1.017. There looked like almost a cup at the bottom of container that wouldn't dissolve. The salt was like a brick and the bag had yellowed. I was doing some forum searching and seen those were bad signs.

    I did go buy a 10 gal. box of instant ocean and it mixed good and salt level was showing 1.027 so I'll let it mix til tomorrow evening for my water change. And add some fresh RO water if needed to get to 1.025.

    Thanks for the replies.
     
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