DWC Rusting on top leaves - need help!

Fhawila · 2025-05-13T06:22:11-0600

Hi guys ,

I’m running Mills nutrients - plants are particularly big as needed them to stabilise before flipping.
1.7-2 EC
PH 5.8-6
600 uMol Quantum Led
66 F Water temp
73 F Ambient Temp
50% RH
1200 PPM CO2

Some plant leaves are showing these rust spots on them, I supplemented low dose Athena Calmag but hasn’t solved 100% - any thoughts are very welcome!

Mr. Mohaskey · 2025-05-14T18:50:14-0600

Raise your ambient "light on" temp to at least 82f, with co2 I'd say 84-86 would be good. 73f for lights off is good. Lower your EC to about 1.2-1.4 for a little while. RH should be raised to about 60% under the conditions I just specified.

Edit: you using Epsom salts? What nutes are you using?

DWC Rusting on top leaves - need help!

Fhawila

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Mr. Mohaskey

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