White crust in leaf serrations..

DoubleAtotheRON

Well-Known Member
Never seen this before. It’s only on a handful of leafs out of a room of 78 plants. It’s only on the tips of the edges, growing in BM7, room is at 80-83 degrees with CO2 at 1300ppm, 55-60Rh. One week into flower. Feeding Tiger Bloom at 500ml per 50 gallons, CalMag at 250ml, and Mammoth P at 30ml. Only feed when dry. This crusty substance does not wipe off easily unless you wet the tip of your finger. No narcosis under the crust.. leafs are from mid level of the plant. Don’t think it’s a problem, I just have never seen it, or know what it is.
 

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