Reef Crystals Saly mix?

[03glide]

I just bought two 5gal. pails. On the lids theres a small white sticker... one says 16174 the other says 16160 any ideas??

Thanks

[Clown79]

Its most likely the batch number. In the event you have issues with the salt you can contact them with the batch number and they can provide info regarding the batch