Morton Ultra 27,000 Grain Water Softener (Model M27) , often identified by its part or reference numbers like
: Ensure your resin tank is two-thirds to three-quarters full . The remaining "freeboard" space is essential for effective backwashing. 40278 water softener full
This is the silent killer of water softener efficiency. If you live in an area with high humidity or if the salt in your tank is old, it can form a hard, crusty layer at the top. This is called a "salt bridge." Morton Ultra 27,000 Grain Water Softener (Model M27)