BuddzKillington1015
Active Member
Anyone know what these brown spots are on the fan leaves? This is a autoflower 50 days old. Plan on harvesting in a couple weeks.
Brown spots
- Thread starter BuddzKillington1015
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hotrodharley
Well-Known Member
Calcium deficiency. Are you using tap water?
BuddzKillington1015
Active Member
No using RO water which would explain it. I already add in cal mag but looks like I have to up the dose.