This is how you can fix your moldy sourdough starter in a few steps.
Troubleshooting Sourdough: Your Questions Answered • The Prairie Homestead
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Sourdough Starter Troubleshooting Guide and FAQ - A Beautiful Plate
Sourdough Starter: From Creation to Maintenance
Sourdough Starter Smell: Key Health Indicators for Your Starter
Sourdough Starter/Bread (Gluten-Free) Troubleshooting FAQ - Art of Gluten-Free Baking
Sourdough Starter Troubleshooting - Buttered Side Up
Sourdough Starter Day-by-Day Photos
Mold on Your Sourdough Starter? Check out These Causes - Our Gabled Home
Spelt Flour Sourdough Starter Recipe for Bread