Softened water has a metallic or rusty taste and orange staining appears despite softener operation

Safety first: Use gloves and eye protection when handling chemical cleaners or iron removal products.

Step-by-step checks:

• 1. Test raw and softened water: Use an iron test kit to measure iron levels before and after the Marlo softener.
• 2. Increase regeneration frequency: Temporarily increase regeneration frequency to reduce iron loading on the resin.
• 3. Clean resin with iron remover: Use a resin cleaner specifically formulated for iron (follow Marlo or chemical manufacturer instructions). Typically, this is added to the brine well and drawn through during regeneration.
• 4. Evaluate need for pre-treatment: If raw water iron is high, consider installing or servicing a dedicated Marlo iron filter ahead of the softener.

When to replace parts: If resin remains fouled after chemical cleaning, replace the Marlo cation resin media. For severe iron problems, add or upgrade a Marlo iron reduction system.