HCA: Hermit Crab Association

Hi all! My friend just got a couple of crabs, set up a great tat, but isn't sure about the salt she's using. I'm not sure it's safe, so I came here. I switched from Instant Ocean to Fritz RPM, and recommended both to her. I'll attach a photo of my salt and then what she sent me.

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Its fine. This one is used for corals I believe, but will do the job nicely.
Edit: nevermind. Second pic just loaded... No, thats table salt. She wants something used for marine aqua.

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