Yellow Pool Stains: Causes + Fixes
Iron in fill water or organic.
What Causes It
Iron in fill water or organic.
How to Fix It
Vitamin C test - if it lifts, treat with ascorbic acid + sequestrant.
When to Call WETYR
If DIY does not resolve the issue within 48 hours, schedule a WETYR service visit. Typical diagnostic + first hour: $185 to $285.