Diagnosing White Zucchini Leaves in Hydroponics

Ruled out fungus? Blanching leaves typically indicate insufficient light or overwatering. In hydroponics, check these first:

Troubleshooting Steps

1. Limit water/nutrient cycles to 1 inch equivalent weekly
2. Mulch with straw/dried grass to cool root zone
3. Inspect with magnifier for aphids (suck sap, cause whitening)
4. If insects: insecticidal soap → pyrethrum/rotenone if needed

Hydroponic systems need precise moisture control — "regular watering" often means excess. Start with reduced irrigation and pest inspection.