The short answer
Let the salt run low, bypass the softener, scoop out salt and sludge, rinse the tank, refill with water and salt, then regenerate.
When
- Sludge or mushy salt at the bottom.
- Salt bridging that keeps returning.
- Switching salt types.
Steps
- Bypass and unplug the softener.
- Remove remaining salt and sludge.
- Rinse with water and a mild soap; rinse well.
- Refill water to the maker's level, add salt, plug in and regenerate.
Salt
Clean pellets reduce residue: Morton 1499 25 lb Softener Salt Pellets, Diamond Crystal Bright & Soft Softener Salt Pellets.
Products mentioned
Questions readers ask
How often should I clean my brine tank?
When residue or bridging builds up; cleaner salt means less often.
Can I use bleach in my brine tank?
Follow the softener maker's instructions; some allow a sanitizing step, others don't.