Unsealed Stone and concrete surfaces can be broken by dissolved Epsom salt splashed or dripped outdoors the tank, due to dried salt recrystallizing and opening up cracks and fissures. Epsom salt will not be corrosive in the way sodium chloride (table salt) is but chlorine can assault some surfaces including https://andres2qzhn.izrablog.com/32509474/a-review-of-how-to-isolate-tanks