HCA: Hermit Crab Association

Thanks! Is there any use for soaking salt in the tank? Its a marine grade product but my not sure of the usefulliness of it.

So i just got my package from the hermitcrab patch with my new food. Seriously am way to excited about it. Lol but i have a question. My local petsmart is no longer stocking salt water conditioner. Someone there said soaking salt mix is the same thing. Im not too trusting of their information. So ca...