Can Morton®  Clean and Protect® or  Clean and Protect® Plus Rust Defense® Water Softening Salt Products be added directly to a koi pond or aquarium?

No, Morton does not recommend adding either Morton® Clean and Protect® or Clean and Protect® Plus Rust Defense® directly to fish ponds or aquariums. Both products contain additives that are specific for water softening, so they are not appropriate for direct addition into a fish pond or aquarium. For the same reason, we would not recommend adding other products like Morton® Table Salt directly to ponds or aquariums.