I have a sick FBT and the only way I see of him getting better is through electrolytes to restore calcium and or/ relieve stress. I know Exo-terra has a product called "Electrolyte", and I want to make something similar or the same. I can't run to the store for another week or so, and I don't think my FBT can stand that long, so I need to make a substance similar to it. How do I go about this?