Hi I'm newb for my 2nd grow with WW auto.
got some white stains on my leaf like photos below, would really really appreciate for any comment or suggestion for the cause and cure for this. Any guru, experts, or anyone who has had this experience? Thanks a lot guys!
Day 25
PHed water only
soil grow
temp 23-26c
humidity 50-60%
no fertilizer yet
Looks like early calcium deficiency.
StarKiller OG - Rockwool - Ebb & Flow - 1200W LED - 2016
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