How to Add Rust Remover to a Water Softener


Rust is a common problem in water supplies, causing stains on sinks, tubs and even clothes. It also changes the flavor of water. While water softeners alone remove a small amount of iron, adding a rust remover prevents rust buildup in the tank.

Things You'll Need

  • Rust removal product
  • Bucket
  • Lift the lid of the brine tank, which is sometimes called a well. Set it aside.

  • Mix a solution of commercial rust remover and water in a bucket. Use anywhere from 1/2 cup of rust remover per one gallon of water, to a much stronger solution of one cup remover per 1/2 gallon water. Follow the product's instructions.

  • Pour the solution into the brine tank.

  • Switch the unit's setting to "Regenerate," and wait as the solution washes through the brine tank and flushes the system.

  • Repeat this process in a water softener with excessive rust content. Regenerate after each addition.

  • Maintain a rust-free tank by adding rust remover periodically. Schedule maintenance for every three months, or whenever salt is added.

Tips & Warnings

  • Add rust removal product when the softener is in a brining cycle and salt levels are low; follow by adding salt as usual.
  • Buckets and containers used to mix the solution are safe for use after thorough washing.
  • Your water softener control head may vary; consult product instructions to determine how to regenerate.
  • Avoid prolonged skin contact with rust removal solution and prevent it from getting in your eyes.

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