HCA: Hermit Crab Association

I made a dumb mistake and bought this for my hermit crab
https://reef-aquarium-store.com/blue-tr ... s-sea-salt

It says "The new formula of Blue Treasure SPS (stony coral) sea salt has been specially developed for the growth and cultivation of SPS (stony coral), this new formula has the required levels of calcium, magnesium, strontium and other essential trace elements of natural seawater."

Would this be fine to use for my crab?
Thank you in advance!

Yes, it's fine for hermits! Any of the salt mixes will work since hermits don't have exacting needs aside from something that recreates ocean water.

Products like this exsist because there's two types of saltwater aquariums - those with corals, and those without (fish/invert only). When there's no coral, the water parameters don't have to be as crazy exact, so regular salt mixes are fine. When there are corals, then there's a lot more elements that have to be tracked and supplemented in order to have healthy growth, and the fancier salt mixes can work better for this purpose.