Raritan 2-Gallon Salt Feed Unit Complete f/LectraSan [31-3001]2 Gallon Salt Feed System The LectraSan does not require a salt feed system for ocean water use as the salinity of the ocean water is sufficient to operate the system as designed. Salt can be added to the LectraSan using a 2 Gallon Salt Feed Tank for brackish water. Low salt is indicated on the LectraSan Control Indicator Panel. Operation A salt solution is mixed and placed in the salt feed tank. Every time the toilet is flushed, part of the salt